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3878 lines
164 KiB
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3878 lines
164 KiB
Plaintext
Release Notes
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Release 7.3
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Release date: 2002-??-??
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Overview
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Major changes in this release:
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Schemas
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Schemas allow users to create objects in their own namespace
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so two people or applications can have tables with the same
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name. There is also a public schema for shared tables.
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Table/index creation can be restricted by removing
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permissions on the public schema.
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Drop Column
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PostgreSQL now supports ALTER TABLE ... DROP COLUMN functionality.
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Table Functions
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Functions returning multiple rows and/or multiple columns are
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now much easier to use than before. You can call such a
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"table function" in the SELECT FROM clause, treating its output
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like a table. Also, plpgsql functions can now return sets.
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Prepared Queries
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For performance, PostgreSQL now supports prepared queries.
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Dependency Tracking
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PostgreSQL now records object dependencies, which allows
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improvements in many areas.
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Privileges
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Functions and procedural languages now have privileges, and
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people running them can take on the privileges of their creators.
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Multibyte/Locale
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Both multibyte and locale are now always enabled.
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Logging
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A variety of logging options have been enhanced.
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Interfaces
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A large number of interfaces have been moved to
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http://gborg.postgresql.org where they can be developed
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and released independently.
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Functions/Identifiers
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By default, functions can now take up to 32 parameters, and
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identifiers can be up to 63 bytes long.
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----------------------------------------------------------------------
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Migration to version 7.3
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A dump/restore using "pg_dump" is required for those wishing to migrate
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data from any previous release.
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Observe the following incompatibilities:
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* Pre-6.3 clients are no longer supported.
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* pg_hba.conf now has a USER column and additional features.
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* Several GUC logging parameters have been renamed and improved.
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* LIMIT #,# is disabled, use LIMIT # OFFSET #.
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* LIMIT can now appear before FOR UPDATE, for portability.
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* INSERTs with column lists must specify all values, e.g.
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INSERT INTO tab (col1, col2) VALUES ('val1') is now invalid
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* DROP object now takes either CASCADE or RESTRICT to control
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whether dependent objects are also dropped
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* An index is now not automatically created for SERIAL columns
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* A SET inside an aborted transaction is now rolled back
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* COPY no longer considers missing trailing columns to be NULL
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* TIMESTAMP and TIME data types now default to WITHOUT TIMEZONE
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----------------------------------------------------------------------
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Changes
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2002-09-02
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Server Operation
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================
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Kerberos V Heimdal support (KTH)
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Add pg_locks view to show locks (Neil)
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Security fixes for password negotiation memory allocation (Neil)
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Remove support for version 0, <=6.2 FE/BE protocol (Tom)
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Reserve the last few backend slots for superusers, add GUC variable
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superuser_reserved_connections to control this (Nigel J. Andrews)
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Performance
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===========
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Improve startup by calling localtime() only once (Tom)
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Cache system catalog information in flat files for faster startup (Tom)
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Improve caching of index information (Tom)
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Optimizer improvements (Tom, Fernando Nasser)
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Catalog caches now store failed lookups (Tom)
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Hash function improvements (Neil)
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Improve performance of query tokenization and network handling (Peter)
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Speed improvement for large object restore (Mario Weilguni)
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Mark expired index entries on first lookup, saving later heap fetches (Tom)
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Eliminate NULL bitmap padding when not required (Manfred)
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Add BSD-licensed qsort() for Solaris, for performance (Bruce)
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Reduce per-row overhead by four bytes (Manfred Koizar)
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Fix GEQO optimizer bug (Neil Conway)
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Make WITHOUT OID actually save four bytes per row (Manfred Koizar)
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Add GUC default_statistics_target variable to specify ANALYZE buckets (Neil)
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Use local buffer cache for temporary tables so no WAL overhead (Tom)
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Privileges
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==========
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Add privileges on functions and procedural languages
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Add OWNER to CREATE DATABASE so superusers can create databases
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on behalf of unprivileged users. (Gavin Sherry, Tom)
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Add new object permission bits EXECUTE and USAGE (Tom)
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Add SET SESSION AUTHORIZATION DEFAULT and RESET SESSION AUTHORIZATION (Peter)
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Allow functions to be executed with the privilege of the function owner (Peter)
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Client Authentication
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=====================
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Add file to hold passwords using PGPASSWORDFILE environment variable
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(Alvaro Herrera)
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Server Configuration
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====================
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Server log messages now tagged with LOG, not DEBUG (Bruce)
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Add USER column to pg_hba.conf (Bruce)
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Have log_connections output two lines in log file (Tom)
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Remove debug_level from postgresql.conf, now SERVER_MIN_MESSAGES (Bruce)
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New ALTER DATABASE/USER ... SET command for per-user/db initialization (Peter)
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New GUC variables server_min_messages and client_min_messages which control
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which messages are sent to the server logs or client applications (Bruce)
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Allow pg_hba.conf to specify lists of users/dbs separated by commas,
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group names prepended with +, and file names prepended with @ (Bruce)
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Allow group names specified by +
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Add samegroup in pg_hba.conf for group name/dbname restriction (Bruce)
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Remove secondary password file capability (Bruce)
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Remove pg_passwd utility (Bruce)
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Add GUC variable db_user_namespace for db-local user names (Bruce)
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SSL improvements (Bear Giles)
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Make encryption of stored passwords the default (Bruce)
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Allow pg_statistics to be reset by calling pg_stat_reset() (Christopher)
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Add log_duration GUC parameter (Bruce)
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Rename GUC debug_print_query to log_statement (Bruce)
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Rename GUC show_query_stats to show_statement_stats (Bruce)
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Add GUC param log_min_error_statement to print query to logs on error (Gavin)
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Queries
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=======
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Make cursors insensitive, meaning their contents do not change (Tom)
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Disable LIMIT #,# syntax; now only LIMIT # OFFSET # supported (Bruce)
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Increase identifier length to 64 (Neil, Bruce)
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UNION fixes for merging >= 3 columns of different lengths (Tom)
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Add DEFAULT keyword to INSERT, i.e INSERT ... (..., DEFAULT, ) (Rod)
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Allow views to have default values using ALTER COLUMN ... SET DEFAULT (Neil)
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Fail on INSERTs with column lists that don't supply all column values,
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e.g. INSERT INTO tab (col1, col2) VALUES ('val1'); (Rod)
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Fix for join aliases (Tom)
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Fix for FULL OUTER JOINs (Tom)
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Improve reporting of invalid identifier and location (Tom, Gavin)
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Fix OPEN cursor(args) (Tom)
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Allow 'ctid' to be used in a view and currtid(viewname) (Hiroshi)
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Fix for CREATE TABLE AS with UNION (Tom)
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SQL99 syntax improvements (Thomas)
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Add GUC statement_timeout variable to cancel queries (Bruce)
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Allow prepared queries with PREPARE/EXECUTE (Neil)
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Allow FOR UPDATE to appear after LIMIT/OFFSET (Bruce)
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Add auto-transactions with GUC variable autocommit (Tom, David Van Wie)
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Object Manipulation
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===================
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Make equals signs optional in CREATE DATABASE (Gavin Sherry)
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Make ALTER TABLE OWNER to change index ownership (Neil)
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Add per-database and per-user startup commands, ALTER DATABASE ... SET and
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ALTER USER ... SET (Peter)
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New ALTER TABLE tabname ALTER COLUMN colname SET STORAGE controls TOAST
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storage, compression (John Gray)
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Add SCHEMA support with CREATE/DROP SCHEMA (Tom)
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Create schema for temporary tables (Tom)
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Add GUC variable search_path for namespace schema search (Tom)
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Add ALTER TABLE SET/DROP NOT NULL (Christopher)
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New CREATE FUNCTION volatility levels (Tom)
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Make rule names unique only per table (Tom)
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Add 'ON tablename' clause to DROP RULE and COMMENT ON RULE (Tom)
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Add ALTER TRIGGER RENAME (Joe)
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New current_schema() and current_schemas() inquiry functions (Tom)
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Allow functions to return multiple rows, also called table functions (Joe)
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Make WITH optional in CREATE DATABASE, for consistency (Bruce)
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Add object dependency tracking (Rod, Tom)
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Add RESTRICT/CASCADE to DROP commands (Rod)
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Add ALTER TABLE DROP non-CHECK CONSTRAINT (Rod)
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Auto-destroy sequence on DROP of table with SERIAL (Rod)
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Prevent column dropping if column is used by foreign key (Rod)
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Automatically drop constraints/functions when object is dropped (Rod)
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Add CREATE/DROP OPERATOR CLASS (Bill Studenmund, Tom)
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Add ALTER TABLE DROP COLUMN (Christopher)
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Prevent inherited columns from being removed or renamed (Alvaro Herrera)
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Add CREATE OR REPLACE VIEW, CREATE OR REPLACE RULE (Gavin, Neil, Tom)
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Fix foreign key constraints to not error on intermediate db states (Stephan)
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Propagate column or table renaming to foreign key constraints
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Utility Commands
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================
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Have COPY TO output embedded carriage returns and newlines as \r and \n (Tom)
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Allow DELIMITER in COPY FROM to be 8-bit clean (Tatsuo)
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Make pg_dump use ALTER TABLE ADD PRIMARY KEY, for performance (Neil)
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Disable brackets in multi-statement rules (Bruce)
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Disable VACUUM from being called inside a function (Bruce)
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Allow dropdb and other scripts to use identifiers with spaces (Bruce)
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Restrict comment to the current database
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Allow comments on operators, independent of the underlying function (Rod)
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Rollback SET commands in aborted transactions (Tom)
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EXPLAIN now outputs as a query (Tom)
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Display sort keys in EXPLAIN (Tom)
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Add 'SET LOCAL var = value' to set GUC variables for a single transaction (Tom)
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Allow ANALYZE to run in a transaction (Bruce)
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Improve COPY syntax using new WITH clauses, keep backward compatibility (Bruce)
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Fix pg_dump to consistently output tags in non-ASCII dumps (Bruce)
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Make foreign key constraints clearer in dump file (Rod)
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Add COMMENT ON CONSTRAINT (Rod)
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Allow COPY TO/FROM to specify column names (Brent Verner)
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Dump UNIQUE and PRIMARY KEY contraints as ALTER TABLE (Rod)
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Have SHOW output a query result (Joe)
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Generate failure on short COPY lines rather than pad NULLs (Neil)
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Fix CLUSTER to preserve all table attributes (Alvaro Herrera)
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New pg_settings table to view/modify GUC settings (Joe)
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Add smart quoting, portability improvements to pg_dump output (Peter)
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Dump serial columns out as SERIAL (Tom)
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Enable large file support, >2G for pg_dump (Peter)
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Disallow TRUNCATE on tables that are involved in referential constraints (Rod)
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Have TRUNCATE also auto-truncate the toast table of the relation (Tom)
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Add clusterdb utility that will auto-cluster an entire database based on
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previous CLUSTER operations (Alvaro Herrera)
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Overhaul pg_dumpall (Peter)
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Allow REINDEX of TOAST tables (Tom)
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Data Types and Functions
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========================
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Fix factorial(0) to return 1 (Bruce)
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Date/time/timezone improvements (Thomas)
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Fix for array slice extraction (Tom)
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Fix extract/date_part to report proper microseconds for timestamp (Tatsuo)
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Allow text_substr() and bytea_substr() to read TOAST values more
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efficiently (John Gray)
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Add DOMAIN type support (Rod)
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Make WITHOUT TIME ZONE the default for TIMESTAMP and TIME data types (Thomas)
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Allow alternate storage scheme of 64-bit integers for date/time types
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using --enable-integer-datetimes in configure (Thomas)
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Make timezone(timestamptz) return timestamp rather than a string (Thomas)
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Allow fractional seconds in date/time types for dates prior to 1BC (Thomas)
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Limit timestamp data types to 6 decimal places of precision (Thomas)
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Change timezone conversion functions from timetz() to timezone() (Thomas)
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Add GUC variables datestyle and timezone (Tom)
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Add OVERLAY(), which allows substitution of a substring in a string (Thomas)
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Add SIMILAR TO as a synonym for our existing operator "~" (Thomas)
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Add regular expression SUBSTRING(string FROM pat FOR escape) (Thomas)
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Add LOCALTIME and LOCALTIMESTAMP functions (Thomas)
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Add named composite types using CREATE TYPE typename AS (column) (Joe)
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Allow composite type definition in the table alias clause (Joe)
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Add new API to simplify creation of C language table functions (Joe)
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Remove ODBC-compatible empty parentheses from calls to SQL99 functions
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for which these parentheses do not match the standar (Thomas)
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Add appendix in the User's Guide which lists SQL92 features (Thomas)
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Allow macaddr data type to accept 12 hex digits with no separators (Mike Wyer)
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Add CREATE/DROP CAST (Thomas)
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Add IS DISTINCT FROM operator (Thomas)
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Add SQL99 TREAT() function, synonym for CAST() (Thomas)
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Add pg_backend_pid() to output backend pid (Bruce)
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Allow inet arrays in /contrib/array (Neil)
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Add IS OF / IS NOT OF type predicate (Thomas)
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Allow bit string constants without fully-specified length (Thomas)
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Allow conversion between 8-byte integers and bit strings (Thomas)
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Implement hex literal conversion to bit string literal (Thomas)
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Allow table functions to appear in the FROM clause (Joe)
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Increase maximum number of function parameters to 32 (Bruce)
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No longer automatically create index for SERIAL column (Tom)
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Add current_database() (Rod)
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Fix cash_words() to not overflow buffer (Tom)
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Add functions replace(), split(), to_hex() (Joe)
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Fix LIKE for bytea as a right-hand argument (Joe)
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Prevent crashes caused by SELECT cash_out(2)
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Triggers are now fired in alphabetical order
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Internationalization
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====================
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Add additional encodings (Korean (JOHAB), Thai (WIN874), Vietnamese (TCVN),
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Arabic (WIN1256), Simplified Chinese (GBK), Korean (UHC) (Eiji Tokuya)
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Enable locale support by default (Peter)
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Add GUC locale variables (Peter)
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Escape byes >= 0x7f for multibyte in PQescapeBytea/PQunescapeBytea (Tatsuo)
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Add locale awareness to regular expression character classes
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Enable multibyte support by default (Tatso)
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Add GUC variables client_encoding (Tom)
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Add GB18030 multibyte support (Bill Huang)
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Add CREATE/DROP CONVERSION, allowing loadable encodings (Tatsuo, Kaori)
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Add pg_conversion table (Tatsuo)
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Add SQL99 CONVERT() function (Tatsuo)
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Server-side Languages
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=====================
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Allow recursive SQL function (Peter)
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Change PL/Tcl build to use configured compiler and Makefile.shlib (Peter)
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Have PL/PgSQL FOUND return proper value for PERFORM and SELECT INTO (Tom, Neil)
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Allow PL/PgSQL to handle quoted identifiers (Tom)
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Allow PL/pgSQL functions can return sets (Neil)
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Psql
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====
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Don't lowercase psql \connect database name for 7.2.0 compatibility (Tom)
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Add psql \timing to time user queries (Greg Sabino Mullane)
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Have psql \d show index information (Greg Sabino Mullane)
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New psql \dD shows domains (Jonathan Eisler)
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Allow psql to show rules on views (Paul ?)
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Fix for psql variable substitution (Tom)
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Allow psql \d to show temporary table structure (Tom)
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Allow psql \d to show foreign keys (Rod)
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Fix \? to honor \pset pager (Bruce)
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Have psql reports its version number on startup (Tom)
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Libpq
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=====
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Add PQunescapeBytea() function to libpq (Patrick Welche)
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Fix for sending large queries over non-blocking connections (Bernhard Herzog)
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Fix for libpq using timers on Win9X (David Ford)
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Allow libpq notify to handle servers with different-length identifiers (Tom)
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Add libpq PQescapeString() and PQescapeBytea() to Win32 (Bruce)
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Fix for SSL with non-blocking connections (Jack Bates)
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Add libpq connection timeout parameter (Denis A Ustimenko)
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JDBC
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====
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Allow jdbc to compile with jdk 1.4 (Dave)
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Add jdbc3 support (Barry)
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Allows jdbc to set loglevel by adding ?loglevel=X to the connection URL (Barry)
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Add jdbc Driver.info() message that prints out the version number (Barry)
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Add jdbc updateable result sets
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Add jdbc support for callable statements
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Add jdbc query cancel capability
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Add refresh row to jdbc (Dave)
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Fix jdbc MD5 encryption handling for multibyte servers (Jun Kawai)
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Add JDBC support for prepared statements (Barry)
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ECPG
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====
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Fixed ecpg bug concerning octal numbers in single quotes (Michael)
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Misc. Interfaces
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================
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Move /interfaces/libpgeasy to http://gborg.postgresql.org (Marc, Bruce)
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Improve python (Elliot Lee, Andrew Johnson, Greg Copeland)
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Add libpgtcl connection close event (Gerhard Hintermayer)
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Move /interfaces/libpq++ to http://gborg.postgresql.org (Marc, Bruce)
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Move /interfaces/odbc to http://gborg.postgresql.org (Marc)
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Move /interfaces/libpgeasy to http://gborg.postgresql.org (Marc, Bruce)
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Move /interfaces/perl5 to http://gborg.postgresql.org (Marc, Bruce)
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Remove /bin/pgaccess from main tree, now at http::/www.pgaccess.org (Bruce)
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Build and Install
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=================
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Fix for parallel make (Peter)
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AIX fixes for linking TCL (Andreas Zeugswetter)
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Allow plperl to build under Cygwin (Jason Tishler)
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Improve MIPS compiles (Peter, Oliver Elphick)
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Require autoconf version 2.53 (Peter)
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Require readline and zlib by default in configure (Peter)
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Allow Solaris to use Intimate Shared Memory (ISM), for performance
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(Scott Brunza, P.J. Josh Rovero)
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Always enable syslog in compile, remove --enable-syslog option (Tatsuo)
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Fix for Win9x DLL creation (Magnus Naeslund)
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Fix for link() usage by WAL code on Win32, Netware, BeOS (Jason Tishler)
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Add sys/types.h to c.h, remove from main files (Peter, Bruce)
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Fix AIX hang on SMP machines (Tomoyuki Niijima)
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Source Code
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===========
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Improve loadable module linking to use RTLD_NOW (Tom)
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New error levels WARNING, INFO, LOG, DEBUG[1-5] (Bruce)
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New src/port directory holds replace libc functions (Peter, Bruce)
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New pg_namespace system catalog for schemas (Tom)
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Add pg_class.relnamespace for schemas (Tom)
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Add pg_type.typnamespace for schemas (Tom)
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Add pg_proc.pronamespace for schemas (Tom)
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Restructure aggregates to have pg_proc entries (Tom)
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System relations now have their own namespace, pg_* test not required
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(Fernando Nasser)
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Rename TOAST index names to be *_index rather than *_idx (Neil)
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Add namespaces for operators, opclasses (Tom)
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Add additional checks to server control file (Thomas)
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New Polish FAQ (Marcin Mazurek)
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Add Posix semaphore support (Tom)
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Document need for reindex (Bruce)
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Rename some internal identifiers to simplify Win32 compile (Jan, Katherine Ward)
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Add documentation on computing disk space (Bruce)
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Remove KSQO from GUC (Bruce)
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Fix memory leak in rtree (Kenneth Been)
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Modify a few error messages for consistency (Bruce)
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Remove unused system table columns (Peter)
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Make system columns NOT NULL where appropriate (Tom)
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Clean up use of sprintf in favor of snprintf()
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Remove OPAQUE and create specific subtypes (Tom)
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Cleanups in array internal handling (Joe)
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Disallow pg_atoi('') (Bruce)
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Remove GUC parameter wal_files because WAL files are now recycled (Bruce)
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Contrib
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=======
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Gist fixes (Teodor Sigaev, Neil)
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Upgrade /contrib/mysql
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Add /contrib/dbsize which shows table sizes without vacuum (Peter)
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Add /contrib/intagg, integer aggregator routines (mlw)
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Improve /contrib/Oid2name (Neil, Bruce)
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Improve /contrib/tsearch (Teodor Sigaev)
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Improve /contrib/tsearch (Oleg)
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Cleanups of /contrib/rserver (Alexey V. Borzov)
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Update /contrib/oracle conversion utility (Gilles Darold)
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Update /contrib/dblink (Joe)
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Improve options supported by /contrib/vacuumlo (Mario Weilguni)
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Improvements to /contrib/intarray (Oleg, Teodor Sigaev, Andrey Oktyabrski)
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Add /contrib/reindexdb utility (Shaun Thomas)
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Add indexing to /contrib/isbn_issn (Dan Weston)
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Add /contrib/dbmirror (Steven Singer)
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Improve /contrib/pgbench (Neil)
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Add /contrib/tablefunc table function examples (Joe)
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Add /contrib/ltree data type for tree structures (Teodor Sigaev, Oleg Bartunov)
|
|
Move /contrib/pg_controldata into main tree (Bruce)
|
|
Fixes to /contrib/cube (Bruno Wolff)
|
|
Improve /contrib/fulltextindex (Christopher)
|
|
----------------------------------------------------------------------
|
|
|
|
Release 7.2.2
|
|
|
|
Release date: 2002-08-23
|
|
|
|
This has a variety of fixes from 7.2.1, including the security
|
|
problems reported on BUGTRAQ.
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Migration to version 7.2.2
|
|
|
|
A dump/restore is *not* required for those running 7.2.X.
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Changes
|
|
|
|
Allow EXECUTE of "CREATE TABLE AS ... SELECT" in PL/PgSQL (Tom)
|
|
Fix for compressed transaction log id wraparound (Tom)
|
|
Fix PQescapeBytea/PQunescapeBytea so that they handle bytes > 0x7f (Tatsuo)
|
|
Fix for psql and pg_dump crashing when invoked with non-existent long
|
|
options (Tatsuo)
|
|
Fix crash when invoking geometric operators (Tom)
|
|
Allow OPEN cursor(args) (Tom)
|
|
Fix for rtree_gist index build (Teodor)
|
|
Fix for usage of partial indexes for relations other than first in
|
|
joins (Tom)
|
|
Fix for dumping user-defined aggregates (Tom)
|
|
Contrib/intarray fixes (Oleg)
|
|
Fix for complex UNION/EXCEPT/INTERSECT queries using parens (Tom)
|
|
Fix to pg_convert (Tatsuo)
|
|
Fix for buffer overrun in handling long datetime input (Thomas, Neil)
|
|
Fix for buffer overrun in repeat() (Neil)
|
|
Fix for buffer overrun in lpad() and rpad() with multibyte (Neil)
|
|
Fix for buffer overrun in SET TIME ZONE and TZ env var (Neil)
|
|
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Release 7.2.1
|
|
|
|
Release date: 2002-03-21
|
|
|
|
This has a variety of fixes from 7.2.
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Migration to version 7.2.1
|
|
|
|
A dump/restore is *not* required for those running 7.2.
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Changes
|
|
|
|
Ensure that sequence counters do not go backwards after a crash (Tom)
|
|
Fix pgaccess kanji-coversion key binding (Tatsuo)
|
|
Optimizer improvements (Tom)
|
|
cash I/O improvements (Tom)
|
|
New Russian FAQ
|
|
Compile fix for missing AuthBlockSig (Heiko)
|
|
Additional time zones and time zone fixes (Thomas)
|
|
Allow psql \connect to handle mixed case database and user names (Tom)
|
|
Return proper OID on command completion even with ON INSERT rules (Tom)
|
|
Allow COPY FROM to use 8-bit DELIMITERS (Tatsuo)
|
|
Fix bug in extract/date_part for milliseconds/microseconds (Tatsuo)
|
|
Improve handling of multiple UNIONs with different lengths (Tom)
|
|
contrib/btree_gist improvements (Teodor Sigaev)
|
|
contrib/tsearch dictionary improvements, see README.tsearch for
|
|
an additional installation step (Thomas T. Thai, Teodor Sigaev)
|
|
Fix for array subscripts handling (Tom)
|
|
Allow EXECUTE of "CREATE TABLE AS ... SELECT" in PL/PgSQL (Tom)
|
|
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Release 7.2
|
|
|
|
Release date: 2002-02-04
|
|
|
|
Overview
|
|
|
|
This release improves PostgreSQL for use in high-volume applications.
|
|
|
|
Major changes in this release:
|
|
|
|
VACUUM
|
|
|
|
Vacuuming no longer locks tables, thus allowing normal user access
|
|
during the vacuum. A new "VACUUM FULL" command does old-style
|
|
vacuum by locking the table and shrinking the on-disk copy of the
|
|
table.
|
|
|
|
Transactions
|
|
|
|
There is no longer a problem with installations that exceed four
|
|
billion transactions.
|
|
|
|
OID's
|
|
|
|
OID's are now optional. Users can now create tables without OID's
|
|
for cases where OID usage is excessive.
|
|
|
|
Optimizer
|
|
|
|
The system now computes histogram column statistics during
|
|
"ANALYZE", allowing much better optimizer choices.
|
|
|
|
Security
|
|
|
|
A new MD5 encryption option allows more secure storage and
|
|
transfer of passwords. A new Unix-domain socket authentication
|
|
option is available on Linux and BSD systems.
|
|
|
|
Statistics
|
|
|
|
Administrators can use the new table access statistics module to
|
|
get fine-grained information about table and index usage.
|
|
|
|
Internationalization
|
|
|
|
Program and library messages can now be displayed in several
|
|
languages.
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Migration to version 7.2
|
|
|
|
A dump/restore using "pg_dump" is required for those wishing to migrate
|
|
data from any previous release.
|
|
|
|
Observe the following incompatibilities:
|
|
|
|
* The semantics of the "VACUUM" command have changed in this release.
|
|
You may wish to update your maintenance procedures accordingly.
|
|
|
|
* In this release, comparisons using = NULL will always return false (or
|
|
NULL, more precisely). Previous releases automatically transformed
|
|
this syntax to IS NULL. The old behavior can be re-enabled using a
|
|
"postgresql.conf" parameter.
|
|
|
|
* The "pg_hba.conf" and "pg_ident.conf" configuration is now only
|
|
reloaded after receiving a SIGHUP signal, not with each connection.
|
|
|
|
* The function "octet_length()" now returns the uncompressed data
|
|
length.
|
|
|
|
* The date/time value 'current' is no longer available. You will need to
|
|
rewrite your applications.
|
|
|
|
* The timestamp() function is no longer available. Use timestamp
|
|
'string' instead, or CAST.
|
|
|
|
The SELECT ... LIMIT #,# syntax will be removed in the next release. You
|
|
should change your queries to use separate LIMIT and OFFSET clauses, e.g.
|
|
LIMIT 10 OFFSET 20.
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Changes
|
|
|
|
Server Operation
|
|
|
|
Create temporary files in a separate directory (Bruce)
|
|
Delete orphanded temporary files on postmaster startup (Bruce)
|
|
Added unique indexes to some system tables (Tom)
|
|
System table operator reorganization (Oleg Bartunov, Teodor Sigaev, Tom)
|
|
Renamed pg_log to pg_clog (Tom)
|
|
Enable SIGTERM, SIGQUIT to kill backends (Jan)
|
|
Removed compile-time limit on number of backends (Tom)
|
|
Better cleanup for semaphore resource failure (Tatsuo, Tom)
|
|
Allow safe transaction ID wraparound (Tom)
|
|
Removed OID's from some system tables (Tom)
|
|
Removed "triggered data change violation" error check (Tom)
|
|
SPI portal creation of prepared/saved plans (Jan)
|
|
Allow SPI column functions to work for system columns (Tom)
|
|
Long value compression improvement (Tom)
|
|
Statistics collector for table, index access (Jan)
|
|
Truncate extra-long sequence names to a reasonable value (Tom)
|
|
Measure transaction times in milliseconds (Thomas)
|
|
Fix TID sequential scans (Hiroshi)
|
|
Superuser ID now fixed at 1 (Peter E)
|
|
New pg_ctl "reload" option (Tom)
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Performance
|
|
|
|
Optimizer improvements (Tom)
|
|
New histogram column statistics for optimizer (Tom)
|
|
Reuse write-ahead log files rather than discarding them (Tom)
|
|
Cache improvements (Tom)
|
|
IS NULL, IS NOT NULL optimizer improvement (Tom)
|
|
Improve lock manager to reduce lock contention (Tom)
|
|
Keep relcache entries for index access support functions (Tom)
|
|
Allow better selectivity with NaN and infinities in NUMERIC (Tom)
|
|
R-tree performance improvements (Kenneth Been)
|
|
B-tree splits more efficient (Tom)
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Privileges
|
|
|
|
Change UPDATE, DELETE permissions to be distinct (Peter E)
|
|
New REFERENCES, TRIGGER privileges (Peter E)
|
|
Allow GRANT/REVOKE to/from more than one user at a time (Peter E)
|
|
New has_table_privilege() function (Joe Conway)
|
|
Allow non-superuser to vacuum database (Tom)
|
|
New SET SESSION AUTHORIZATION command (Peter E)
|
|
Fix bug in privilege modifications on newly created tables (Tom)
|
|
Disallow access to pg_statistic for non-superuser, add user-accessible views (Tom)
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Client Authentication
|
|
|
|
Fork postmaster before doing authentication to prevent hangs (Peter E)
|
|
Add ident authentication over Unix domain sockets on Linux, *BSD (Helge Bahmann, Oliver Elphick, Teodor Sigaev, Bruce)
|
|
Add a password authentication method that uses MD5 encryption (Bruce)
|
|
Allow encryption of stored passwords using MD5 (Bruce)
|
|
PAM authentication (Dominic J. Eidson)
|
|
Load pg_hba.conf and pg_ident.conf only on startup and SIGHUP (Bruce)
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Server Configuration
|
|
|
|
Interpretation of some time zone abbreviations as Australian rather than North American now settable at run time (Bruce)
|
|
New parameter to set default transaction isolation level (Peter E)
|
|
New parameter to enable conversion of "expr = NULL" into "expr IS NULL", off by default (Peter E)
|
|
New parameter to control memory usage by VACUUM (Tom)
|
|
New parameter to set client authentication timeout (Tom)
|
|
New parameter to set maximum number of open files (Tom)
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Queries
|
|
|
|
Statements added by INSERT rules now execute after the INSERT (Jan)
|
|
Prevent unadorned relation names in target list (Bruce)
|
|
NULLs now sort after all normal values in ORDER BY (Tom)
|
|
New IS UNKNOWN, IS NOT UNKNOWN Boolean tests (Tom)
|
|
New SHARE UPDATE EXCLUSIVE lock mode (Tom)
|
|
New EXPLAIN ANALYZE command that shows run times and row counts (Martijn van Oosterhout)
|
|
Fix problem with LIMIT and subqueries (Tom)
|
|
Fix for LIMIT, DISTINCT ON pushed into subqueryies (Tom)
|
|
Fix nested EXCEPT/INTERSECT (Tom)
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Schema Manipulation
|
|
|
|
Fix SERIAL in temporary tables (Bruce)
|
|
Allow temporary sequences (Bruce)
|
|
Sequences now use int8 internally (Tom)
|
|
New SERIAL8 creates int8 columns with sequences, default still SERIAL4 (Tom)
|
|
Make OIDs optional using WITHOUT OIDS (Tom)
|
|
Add %TYPE syntax to CREATE TYPE (Ian Lance Taylor)
|
|
Add ALTER TABLE / DROP CONSTRAINT for CHECK constraints (Christopher Kings-Lynne)
|
|
New CREATE OR REPLACE FUNCTION to alter existing function (preserving the function OID) (Gavin Sherry)
|
|
Add ALTER TABLE / ADD [ UNIQUE | PRIMARY ] (Christopher Kings-Lynne)
|
|
Allow column renaming in views
|
|
Make ALTER TABLE / RENAME COLUMN update column names of indexes (Brent Verner)
|
|
Fix for ALTER TABLE / ADD CONSTRAINT ... CHECK with inherited tables (Stephan Szabo)
|
|
ALTER TABLE RENAME update foreign-key trigger arguments correctly (Brent Verner)
|
|
DROP AGGREGATE and COMMENT ON AGGREGATE now accept an aggtype (Tom)
|
|
Add automatic return type data casting for SQL functions (Tom)
|
|
Allow GiST indexes to handle NULLs and multikey indexes (Oleg Bartunov, Teodor Sigaev, Tom)
|
|
Enable partial indexes (Martijn van Oosterhout)
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Utility Commands
|
|
|
|
Add RESET ALL, SHOW ALL (Marko Kreen)
|
|
CREATE/ALTER USER/GROUP now allow options in any order (Vince)
|
|
Add LOCK A, B, C functionality (Neil Padgett)
|
|
New ENCRYPTED/UNENCRYPTED option to CREATE/ALTER USER (Bruce)
|
|
New light-weight VACUUM does not lock table; old semantics are available as VACUUM FULL (Tom)
|
|
Disable COPY TO/FROM on views (Bruce)
|
|
COPY DELIMITERS string must be exactly one character (Tom)
|
|
VACUUM warning about index tuples fewer than heap now only appears when appropriate (Martijn van Oosterhout)
|
|
Fix permission checks for CREATE INDEX (Tom)
|
|
Disallow inappropriate use of CREATE/DROP INDEX/TRIGGER/VIEW (Tom)
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Data Types and Functions
|
|
|
|
SUM(), AVG(), COUNT() now uses int8 internally for speed (Tom)
|
|
Add convert(), convert2() (Tatsuo)
|
|
New function bit_length() (Peter E)
|
|
Make the "n" in CHAR(n)/VARCHAR(n) represents letters, not bytes (Tatsuo)
|
|
CHAR(), VARCHAR() now reject strings that are too long (Peter E)
|
|
BIT VARYING now rejects bit strings that are too long (Peter E)
|
|
BIT now rejects bit strings that do not match declared size (Peter E)
|
|
INET, CIDR text conversion functions (Alex Pilosov)
|
|
INET, CIDR operators << and <<= indexable (Alex Pilosov)
|
|
Bytea \### now requires valid three digit octal number
|
|
Bytea comparison improvements, now supports =, <>, >, >=, <, and <=
|
|
Bytea now supports B-tree indexes
|
|
Bytea now supports LIKE, LIKE...ESCAPE, NOT LIKE, NOT LIKE...ESCAPE
|
|
Bytea now supports concatenation
|
|
New bytea functions: position, substring, trim, btrim, and length
|
|
New encode() function mode, "escaped", converts minimally escaped bytea to/from text
|
|
Add pg_database_encoding_max_length() (Tatsuo)
|
|
Add pg_client_encoding() function (Tatsuo)
|
|
now() returns time with millisecond precision (Thomas)
|
|
New TIMESTAMP WITHOUT TIMEZONE data type (Thomas)
|
|
Add ISO date/time specification with "T", yyyy-mm-ddThh:mm:ss (Thomas)
|
|
New xid/int comparison functions (Hiroshi)
|
|
Add precision to TIME, TIMESTAMP, and INVERVAL data types (Thomas)
|
|
Modify type coersion logic to attempt binary-compatible functions first (Tom)
|
|
New encode() function installed by default (Marko Kreen)
|
|
Improved to_*() conversion functions (Karel Zak)
|
|
Optimize LIKE/ILIKE when using single-byte encodings (Tatsuo)
|
|
New functions in contrib/pgcrypto: crypt(), hmac(), encrypt(), gen_salt() (Marko Kreen)
|
|
Correct description of translate() function (Bruce)
|
|
Add INTERVAL argument for SET TIME ZONE (Thomas)
|
|
Add INTERVAL YEAR TO MONTH (etc.) syntax (Thomas)
|
|
Optimize length functions when using single-byte encodings (Tatsuo)
|
|
Fix path_inter, path_distance, path_length, dist_ppath to handle closed paths (Curtis Barrett, Tom)
|
|
octet_length(text) now returns non-compressed length (Tatsuo, Bruce)
|
|
Handle "July" full name in date/time literals (Greg Sabino Mullane)
|
|
Some datatype() function calls now evaluated differently
|
|
Add support for Julian and ISO time specifications (Thomas)
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Internationalization
|
|
|
|
National language support in psql, pg_dump, libpq, and server (Peter E)
|
|
Message translations in Chinese (simplified, traditional), Czech, French, German, Hungarian, Russian, Swedish (Peter E, Serguei A. Mokhov, Karel Zak, Weiping He, Zhenbang Wei, Kovacs Zoltan)
|
|
Make trim, ltrim, rtrim, btrim, lpad, rpad, translate multibyte aware (Tatsuo)
|
|
Add LATIN5,6,7,8,9,10 support (Tatsuo)
|
|
Add ISO 8859-5,6,7,8 support (Tatsuo)
|
|
Correct LATIN5 to mean ISO-8859-9, not ISO-8859-5 (Tatsuo)
|
|
Make mic2ascii() non-ASCII aware (Tatsuo)
|
|
Reject invalid multibyte character sequences (Tatsuo)
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
PL/pgSQL
|
|
|
|
Now uses portals for SELECT loops, allowing huge result sets (Jan)
|
|
CURSOR and REFCURSOR support (Jan)
|
|
Can now return open cursors (Jan)
|
|
Add ELSEIF (Klaus Reger)
|
|
Improve PL/pgSQL error reporting, including location of error (Tom)
|
|
Allow IS or FOR key words in cursor declaration, for compatibility (Bruce)
|
|
Fix for SELECT ... FOR UPDATE (Tom)
|
|
Fix for PERFORM returning multiple rows (Tom)
|
|
Make PL/pgSQL use the server's type coercion code (Tom)
|
|
Memory leak fix (Jan, Tom)
|
|
Make trailing semicolon optional (Tom)
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
PL/Perl
|
|
|
|
New untrusted PL/Perl (Alex Pilosov)
|
|
PL/Perl is now built on some platforms even if libperl is not shared (Peter E)
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
PL/Tcl
|
|
|
|
Now reports errorInfo (Vsevolod Lobko)
|
|
Add spi_lastoid function (bob@redivi.com)
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
PL/Python
|
|
|
|
...is new (Andrew Bosma)
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Psql
|
|
|
|
\d displays indexes in unique, primary groupings (Christopher Kings-Lynne)
|
|
Allow trailing semicolons in backslash commands (Greg Sabino Mullane)
|
|
Read password from /dev/tty if possible
|
|
Force new password prompt when changing user and database (Tatsuo, Tom)
|
|
Format the correct number of columns for Unicode (Patrice)
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Libpq
|
|
|
|
New function PQescapeString() to escape quotes in command strings (Florian Weimer)
|
|
New function PQescapeBytea() escapes binary strings for use as SQL string literals
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
JDBC
|
|
|
|
Return OID of INSERT (Ken K)
|
|
Handle more data types (Ken K)
|
|
Handle single quotes and newlines in strings (Ken K)
|
|
Handle NULL variables (Ken K)
|
|
Fix for time zone handling (Barry Lind)
|
|
Improved Druid support
|
|
Allow eight-bit characters with non-multibyte server (Barry Lind)
|
|
Support BIT, BINARY types (Ned Wolpert)
|
|
Reduce memory usage (Michael Stephens, Dave Cramer)
|
|
Update DatabaseMetaData (Peter E)
|
|
Add DatabaseMetaData.getCatalogs() (Peter E)
|
|
Encoding fixes (Anders Bengtsson)
|
|
Get/setCatalog methods (Jason Davies)
|
|
DatabaseMetaData.getColumns() now returns column defaults (Jason Davies)
|
|
DatabaseMetaData.getColumns() performance improvement (Jeroen van Vianen)
|
|
Some JDBC1 and JDBC2 merging (Anders Bengtsson)
|
|
Transaction performance improvements (Barry Lind)
|
|
Array fixes (Greg Zoller)
|
|
Serialize addition
|
|
Fix batch processing (Rene Pijlman)
|
|
ExecSQL method reorganization (Anders Bengtsson)
|
|
GetColumn() fixes (Jeroen van Vianen)
|
|
Fix isWriteable() function (Rene Pijlman)
|
|
Improved passage of JDBC2 conformance tests (Rene Pijlman)
|
|
Add bytea type capability (Barry Lind)
|
|
Add isNullable() (Rene Pijlman)
|
|
JDBC date/time test suite fixes (Liam Stewart)
|
|
Fix for SELECT 'id' AS xxx FROM table (Dave Cramer)
|
|
Fix DatabaseMetaData to show precision properly (Mark Lillywhite)
|
|
New getImported/getExported keys (Jason Davies)
|
|
MD5 password encryption support (Jeremy Wohl)
|
|
Fix to actually use type cache (Ned Wolpert)
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
ODBC
|
|
|
|
Remove query size limit (Hiroshi)
|
|
Remove text field size limit (Hiroshi)
|
|
Fix for SQLPrimaryKeys in multibyte mode (Hiroshi)
|
|
Allow ODBC procedure calls (Hiroshi)
|
|
Improve boolean handing (Aidan Mountford)
|
|
Most configuration options on setable via DSN (Hiroshi)
|
|
Multibyte, performance fixes (Hiroshi)
|
|
Allow driver to be used with iODBC or unixODBC (Peter E)
|
|
MD5 password encryption support (Bruce)
|
|
Add more compatibility functions to odbc.sql (Peter E)
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
ECPG
|
|
|
|
EXECUTE ... INTO implemented (Christof Petig)
|
|
Multiple row descriptor support (e.g. CARDINALITY) (Christof Petig)
|
|
Fix for GRANT parameters (Lee Kindness)
|
|
Fix INITIALLY DEFERRED bug
|
|
Various bug fixes (Michael, Christof Petig)
|
|
Auto allocation for indicator variable arrays (int *ind_p=NULL)
|
|
Auto allocation for string arrays (char **foo_pp=NULL)
|
|
ECPGfree_auto_mem fixed
|
|
All function names with external linkage are now prefixed by ECPG
|
|
Fixes for arrays of structures (Michael)
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Misc. Interfaces
|
|
|
|
Python fix fetchone() (Gerhard Haring)
|
|
Use UTF, Unicode in Tcl where appropriate (Vsevolod Lobko, Reinhard Max)
|
|
Add Tcl COPY TO/FROM (ljb)
|
|
Prevent output of default index op class in pg_dump (Tom)
|
|
Fix libpgeasy memory leak (Bruce)
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Build and Install
|
|
|
|
Configure, dynamic loader, and shared library fixes (Peter E)
|
|
Fixes in QNX 4 port (Bernd Tegge)
|
|
Fixes in Cygwin and Win32 ports (Jason Tishler, Gerhard Haring, Dmitry Yurtaev, Darko Prenosil, Mikhail Terekhov)
|
|
Fix for Win32 socket communication failures (Magnus, Mikhail Terekhov)
|
|
Hurd compile fix (Oliver Elphick)
|
|
BeOS fixes (Cyril Velter)
|
|
Remove configure --enable-unicode-conversion, now enabled by multibyte (Tatsuo)
|
|
AIX fixes (Tatsuo, Andreas)
|
|
Fix parallel make (Peter E)
|
|
Install SQL language manual pages into OS-specific directories (Peter E)
|
|
Rename config.h to pg_config.h (Peter E)
|
|
Reorganize installation layout of header files (Peter E)
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Source Code
|
|
|
|
Remove SEP_CHAR (Bruce)
|
|
New GUC hooks (Tom)
|
|
Merge GUC and command line handling (Marko Kreen)
|
|
Remove EXTEND INDEX (Martijn van Oosterhout, Tom)
|
|
New pgjindent utility to indent java code (Bruce)
|
|
Remove define of true/false when compiling under C++ (Leandro Fanzone, Tom)
|
|
pgindent fixes (Bruce, Tom)
|
|
Replace strcasecmp() with strcmp() where appropriate (Peter E)
|
|
Dynahash portability improvements (Tom)
|
|
Add 'volatile' usage in spinlock structures
|
|
Improve signal handling logic (Tom)
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Contrib
|
|
|
|
New contrib/rtree_gist (Oleg Bartunov, Teodor Sigaev)
|
|
New contrib/tsearch full-text indexing (Oleg, Teodor Sigaev)
|
|
Add contrib/dblink for remote database access (Joe Conway)
|
|
contrib/ora2pg Oracle conversion utility (Gilles Darold)
|
|
contrib/xml XML conversion utility (John Gray)
|
|
contrib/fulltextindex fixes (Christopher Kings-Lynne)
|
|
New contrib/fuzzystrmatch with levenshtein and metaphone, soundex merged (Joe Conway)
|
|
Add contrib/intarray boolean queries, binary search, fixes (Oleg Bartunov)
|
|
New pg_upgrade utility (Bruce)
|
|
Add new pg_resetxlog options (Bruce, Tom)
|
|
----------------------------------------------------------------------
|
|
|
|
Release 7.1.3
|
|
|
|
Release date: 2001-08-15
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Migration to version 7.1.3
|
|
|
|
A dump/restore is *not* required for those running 7.1.X.
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Changes
|
|
|
|
Remove unused WAL segements of large transactions (Tom)
|
|
Multiaction rule fix (Tom)
|
|
PL/pgSQL memory allocation fix (Jan)
|
|
VACUUM buffer fix (Tom)
|
|
Regression test fixes (Tom)
|
|
pg_dump fixes for GRANT/REVOKE/comments on views, user-defined types (Tom)
|
|
Fix subselects with DISTINCT ON or LIMIT (Tom)
|
|
BEOS fix
|
|
Disable COPY TO/FROM a view (Tom)
|
|
Cygwin build (Jason Tishler)
|
|
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Release 7.1.2
|
|
|
|
Release date: 2001-05-11
|
|
|
|
This has one fix from 7.1.1.
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Migration to version 7.1.2
|
|
|
|
A dump/restore is *not* required for those running 7.1.X.
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Changes
|
|
|
|
Fix PL/pgSQL SELECTs when returning no rows
|
|
Fix for psql backslash core dump
|
|
Referential integrity permission fix
|
|
Optimizer fixes
|
|
pg_dump cleanups
|
|
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Release 7.1.1
|
|
|
|
Release date: 2001-05-05
|
|
|
|
This has a variety of fixes from 7.1.
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Migration to version 7.1.1
|
|
|
|
A dump/restore is *not* required for those running 7.1.
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Changes
|
|
|
|
Fix for numeric MODULO operator (Tom)
|
|
pg_dump fixes (Philip)
|
|
pg_dump can dump 7.0 databases (Philip)
|
|
readline 4.2 fixes (Peter E)
|
|
JOIN fixes (Tom)
|
|
AIX, MSWIN, VAX,N32K fixes (Tom)
|
|
Multibytes fixes (Tom)
|
|
Unicode fixes (Tatsuo)
|
|
Optimizer improvements (Tom)
|
|
Fix for whole tuples in functions (Tom)
|
|
Fix for pg_ctl and option strings with spaces (Peter E)
|
|
ODBC fixes (Hiroshi)
|
|
EXTRACT can now take string argument (Thomas)
|
|
Python fixes (Darcy)
|
|
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Release 7.1
|
|
|
|
Release date: 2001-04-13
|
|
|
|
This release focuses on removing limitations that have existed in the
|
|
PostgreSQL code for many years.
|
|
|
|
Major changes in this release:
|
|
|
|
Write-ahead Log (WAL)
|
|
|
|
To maintain database consistency in case of an operating system
|
|
crash, previous releases of PostgreSQL have forced all data
|
|
modifications to disk before each transaction commit. With WAL,
|
|
only one log file must be flushed to disk, greatly improving
|
|
performance. If you have been using -F in previous releases to
|
|
disable disk flushes, you may want to consider discontinuing its
|
|
use.
|
|
|
|
TOAST
|
|
|
|
TOAST - Previous releases had a compiled-in row length limit,
|
|
typically 8k - 32k. This limit made storage of long text fields
|
|
difficult. With TOAST, long rows of any length can be stored with
|
|
good performance.
|
|
|
|
Outer Joins
|
|
|
|
We now support outer joins. The UNION/NOT IN workaround for outer
|
|
joins is no longer required. We use the SQL92 outer join syntax.
|
|
|
|
Function Manager
|
|
|
|
The previous C function manager did not handle NULLs properly, nor
|
|
did it support 64-bit CPU's (Alpha). The new function manager
|
|
does. You can continue using your old custom functions, but you
|
|
may want to rewrite them in the future to use the new function
|
|
manager call interface.
|
|
|
|
Complex Queries
|
|
|
|
A large number of complex queries that were unsupported in
|
|
previous releases now work. Many combinations of views,
|
|
aggregates, UNION, LIMIT, cursors, subqueries, and inherited
|
|
tables now work properly. Inherited tables are now accessed by
|
|
default. Subqueries in FROM are now supported.
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Migration to version 7.1
|
|
|
|
A dump/restore using pg_dump is required for those wishing to migrate data
|
|
from any previous release.
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Changes
|
|
|
|
Bug Fixes
|
|
---------
|
|
Many multi-byte/Unicode/locale fixes (Tatsuo and others)
|
|
More reliable ALTER TABLE RENAME (Tom)
|
|
Kerberos V fixes (David Wragg)
|
|
Fix for INSERT INTO...SELECT where targetlist has subqueries (Tom)
|
|
Prompt username/password on standard error (Bruce)
|
|
Large objects inv_read/inv_write fixes (Tom)
|
|
Fixes for to_char(), to_date(), to_ascii(), and to_timestamp() (Karel,
|
|
Daniel Baldoni)
|
|
Prevent query expressions from leaking memory (Tom)
|
|
Allow UPDATE of arrays elements (Tom)
|
|
Wake up lock waiters during cancel (Hiroshi)
|
|
Fix rare cursor crash when using hash join (Tom)
|
|
Fix for DROP TABLE/INDEX in rolled-back transaction (Hiroshi)
|
|
Fix psql crash from \l+ if MULTIBYTE enabled (Peter E)
|
|
Fix truncation of rule names during CREATE VIEW (Ross Reedstrom)
|
|
Fix PL/perl (Alex Kapranoff)
|
|
Disallow LOCK on views (Mark Hollomon)
|
|
Disallow INSERT/UPDATE/DELETE on views (Mark Hollomon)
|
|
Disallow DROP RULE, CREATE INDEX, TRUNCATE on views (Mark Hollomon)
|
|
Allow PL/pgSQL accept non-ASCII identifiers (Tatsuo)
|
|
Allow views to proper handle GROUP BY, aggregates, DISTINCT (Tom)
|
|
Fix rare failure with TRUNCATE command (Tom)
|
|
Allow UNION/INTERSECT/EXCEPT to be used with ALL, subqueries, views,
|
|
DISTINCT, ORDER BY, SELECT...INTO (Tom)
|
|
Fix parser failures during aborted transactions (Tom)
|
|
Allow temporary relations to properly clean up indexes (Bruce)
|
|
Fix VACUUM problem with moving rows in same page (Tom)
|
|
Modify pg_dump to better handle user-defined items in template1 (Philip)
|
|
Allow LIMIT in VIEW (Tom)
|
|
Require cursor FETCH to honor LIMIT (Tom)
|
|
Allow PRIMARY/FOREIGN Key definitions on inherited columns (Stephan)
|
|
Allow ORDER BY, LIMIT in sub-selects (Tom)
|
|
Allow UNION in CREATE RULE (Tom)
|
|
Make ALTER/DROP TABLE rollback-able (Vadim, Tom)
|
|
Store initdb collation in pg_control so collation cannot be changed (Tom)
|
|
Fix INSERT...SELECT with rules (Tom)
|
|
Fix FOR UPDATE inside views and subselects (Tom)
|
|
Fix OVERLAPS operators conform to SQL92 spec regarding NULLs (Tom)
|
|
Fix lpad() and rpad() to handle length less than input string (Tom)
|
|
Fix use of NOTIFY in some rules (Tom)
|
|
Overhaul btree code (Tom)
|
|
Fix NOT NULL use in Pl/pgSQL variables (Tom)
|
|
Overhaul GIST code (Oleg)
|
|
Fix CLUSTER to preserve constraints and column default (Tom)
|
|
Improved deadlock detection handling (Tom)
|
|
Allow multiple SERIAL columns in a table (Tom)
|
|
Prevent occasional index corruption (Vadim)
|
|
|
|
Enhancements
|
|
------------
|
|
Add OUTER JOINs (Tom)
|
|
Function manager overhaul (Tom)
|
|
Allow ALTER TABLE RENAME on indexes (Tom)
|
|
Improve CLUSTER (Tom)
|
|
Improve ps status display for more platforms (Peter E, Marc)
|
|
Improve CREATE FUNCTION failure message (Ross)
|
|
JDBC improvements (Peter, Travis Bauer, Christopher Cain, William Webber,
|
|
Gunnar)
|
|
Grand Unified Configuration scheme/GUC. Many options can now be set in
|
|
data/postgresql.conf, postmaster/postgres flags, or SET commands (Peter E)
|
|
Improved handling of file descriptor cache (Tom)
|
|
New warning code about auto-created table alias entries (Bruce)
|
|
Overhaul initdb process (Tom, Peter E)
|
|
Overhaul of inherited tables; inherited tables now accessed by default;
|
|
new ONLY keyword prevents it (Chris Bitmead, Tom)
|
|
ODBC cleanups/improvements (Nick Gorham, Stephan Szabo, Zoltan Kovacs,
|
|
Michael Fork)
|
|
Allow renaming of temp tables (Tom)
|
|
Overhaul memory manager contexts (Tom)
|
|
pg_dumpall uses CREATE USER or CREATE GROUP rather using COPY (Peter E)
|
|
Overhaul pg_dump (Philip Warner)
|
|
Allow pg_hba.conf secondary password file to specify only username (Peter E)
|
|
Allow TEMPORARY or TEMP keyword when creating temporary tables (Bruce)
|
|
New memory leak checker (Karel)
|
|
New SET SESSION CHARACTERISTICS (Thomas)
|
|
Allow nested block comments (Thomas)
|
|
Add WITHOUT TIME ZONE type qualifier (Thomas)
|
|
New ALTER TABLE ADD CONSTRAINT (Stephan)
|
|
Use NUMERIC accumulators for INTEGER aggregates (Tom)
|
|
Overhaul aggregate code (Tom)
|
|
New VARIANCE and STDDEV() aggregates
|
|
Improve dependency ordering of pg_dump (Philip)
|
|
New pg_restore command (Philip)
|
|
New pg_dump tar output option (Philip)
|
|
New pg_dump of large objects (Philip)
|
|
New ESCAPE option to LIKE (Thomas)
|
|
New case-insensitive LIKE - ILIKE (Thomas)
|
|
Allow functional indexes to use binary-compatible type (Tom)
|
|
Allow SQL functions to be used in more contexts (Tom)
|
|
New pg_config utility (Peter E)
|
|
New PL/pgSQL EXECUTE command which allows dynamic SQL and utility statements
|
|
(Jan)
|
|
New PL/pgSQL GET DIAGNOSTICS statement for SPI value access (Jan)
|
|
New quote_identifiers() and quote_literal() functions (Jan)
|
|
New ALTER TABLE table OWNER TO user command (Mark Hollomon)
|
|
Allow subselects in FROM, i.e. FROM (SELECT ...) [AS] alias (Tom)
|
|
Update PyGreSQL to version 3.1 (D'Arcy)
|
|
Store tables as files named by OID (Vadim)
|
|
New SQL function setval(seq,val,bool) for use in pg_dump (Philip)
|
|
Require DROP VIEW to remove views, no DROP TABLE (Mark)
|
|
Allow DROP VIEW view1, view2 (Mark)
|
|
Allow multiple objects in DROP INDEX, DROP RULE, and DROP TYPE (Tom)
|
|
Allow automatic conversion to/from Unicode (Tatsuo, Eiji)
|
|
New /contrib/pgcrypto hashing functions (Marko Kreen)
|
|
New pg_dumpall --globals-only option (Peter E)
|
|
New CHECKPOINT command for WAL which creates new WAL log file (Vadim)
|
|
New AT TIME ZONE syntax (Thomas)
|
|
Allow location of Unix domain socket to be configurable (David J. MacKenzie)
|
|
Allow postmaster to listen on a specific IP address (David J. MacKenzie)
|
|
Allow socket path name to be specified in hostname by using leading slash
|
|
(David J. MacKenzie)
|
|
Allow CREATE DATABASE to specify template database (Tom)
|
|
New utility to convert MySQL schema dumps to SQL92 and PostgreSQL (Thomas)
|
|
New /contrib/rserv replication toolkit (Vadim)
|
|
New file format for COPY BINARY (Tom)
|
|
New /contrib/oid2name to map numeric files to table names (B Palmer)
|
|
New "idle in transaction" ps status message (Marc)
|
|
Update to pgaccess 0.98.7 (Constantin Teodorescu)
|
|
pg_ctl now defaults to -w (wait) on shutdown, new -l (log) option
|
|
Add rudimentary dependency checking to pg_dump (Philip)
|
|
|
|
Types
|
|
-----
|
|
Fix INET/CIDR type ordering and add new functions (Tom)
|
|
Make OID behave as an unsigned type (Tom)
|
|
Allow BIGINT as synonym for INT8 (Peter E)
|
|
New int2 and int8 comparison operators (Tom)
|
|
New BIT and BIT VARYING types (Adriaan Joubert, Tom, Peter E)
|
|
CHAR() no longer faster than VARCHAR() because of TOAST (Tom)
|
|
New GIST seg/cube examples (Gene Selkov)
|
|
Improved round(numeric) handling (Tom)
|
|
Fix CIDR output formatting (Tom)
|
|
New CIDR abbrev() function (Tom)
|
|
|
|
Performance
|
|
-----------
|
|
Write-Ahead Log (WAL) to provide crash recovery with less performance
|
|
overhead (Vadim)
|
|
ANALYZE stage of VACUUM no longer exclusively locks table (Bruce)
|
|
Reduced file seeks (Denis Perchine)
|
|
Improve BTREE code for duplicate keys (Tom)
|
|
Store all large objects in a single table (Denis Perchine, Tom)
|
|
Improve memory allocation performance (Karel, Tom)
|
|
|
|
Source Code
|
|
-----------
|
|
New function manager call conventions (Tom)
|
|
SGI portability fixes (David Kaelbling)
|
|
New configure --enable-syslog option (Peter E)
|
|
New BSDI README (Bruce)
|
|
configure script moved to top level, not /src (Peter E)
|
|
Makefile/configuration/compilation overhaul (Peter E)
|
|
New configure --with-python option (Peter E)
|
|
Solaris cleanups (Peter E)
|
|
Overhaul /contrib Makefiles (Karel)
|
|
New OpenSSL configuration option (Magnus, Peter E)
|
|
AIX fixes (Andreas)
|
|
QNX fixes (Maurizio)
|
|
New heap_open(), heap_openr() API (Tom)
|
|
Remove colon and semi-colon operators (Thomas)
|
|
New pg_class.relkind value for views (Mark Hollomon)
|
|
Rename ichar() to chr() (Karel)
|
|
New documentation for btrim(), ascii(), chr(), repeat() (Karel)
|
|
Fixes for NT/Cygwin (Pete Forman)
|
|
AIX port fixes (Andreas)
|
|
New BeOS port (David Reid, Cyril Velter)
|
|
Add proofreader's changes to docs (Addison-Wesley, Bruce)
|
|
New Alpha spinlock code (Adriaan Joubert, Compaq)
|
|
Unixware port overhaul (Peter E)
|
|
New Darwin/Mac OSX port (Peter Bierman, Bruce Hartzler)
|
|
New FreeBSD Alpha port (Alfred)
|
|
Overhaul shared memory segments (Tom)
|
|
Add IBM S/390 support (Neale Ferguson)
|
|
Moved macmanuf to /contrib (Larry Rosenman)
|
|
Syslog improvements (Larry Rosenman)
|
|
New template0 database that contains no user additions (Tom)
|
|
New /contrib/cube and /contrib/seg GIST sample code (Gene Selkov)
|
|
Allow NetBSD's libedit instead of readline (Peter)
|
|
Improved assembly language source code format (Bruce)
|
|
New contrib/pg_logger
|
|
New --template option to createdb
|
|
New contrib/pg_control utility (Oliver)
|
|
New FreeBSD tools ipc_check, start-scripts/freebsd
|
|
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Release 7.0.3
|
|
|
|
Release date: 2000-11-11
|
|
|
|
This has a variety of fixes from 7.0.2.
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Migration to version 7.0.3
|
|
|
|
A dump/restore is *not* required for those running 7.0.*.
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Changes
|
|
|
|
Jdbc fixes (Peter)
|
|
Large object fix (Tom)
|
|
Fix lean in COPY WITH OIDS leak (Tom)
|
|
Fix backwards-index-scan (Tom)
|
|
Fix SELECT ... FOR UPDATE so it checks for duplicate keys (Hiroshi)
|
|
Add --enable-syslog to configure (Marc)
|
|
Fix abort transaction at backend exit in rare cases (Tom)
|
|
Fix for psql \l+ when multi-byte enabled (Tatsuo)
|
|
Allow PL/pgSQL to accept non ascii identifiers (Tatsuo)
|
|
Make vacuum always flush buffers (Tom)
|
|
Fix to allow cancel while waiting for a lock (Hiroshi)
|
|
Fix for memory aloocation problem in user authentication code (Tom)
|
|
Remove bogus use of int4out() (Tom)
|
|
Fixes for multiple subqueries in COALESCE or BETWEEN (Tom)
|
|
Fix for failure of triggers on heap open in certain cases (Jeroen van
|
|
Vianen)
|
|
Fix for erroneous selectivity of not-equals (Tom)
|
|
Fix for erroneous use of strcmp() (Tom)
|
|
Fix for bug where storage manager accesses items beyond end of file
|
|
(Tom)
|
|
Fix to include kernel errno message in all smgr elog messages (Tom)
|
|
Fix for '.' not in PATH at build time (SL Baur)
|
|
Fix for out-of-file-descriptors error (Tom)
|
|
Fix to make pg_dump dump 'iscachable' flag for functions (Tom)
|
|
Fix for subselect in targetlist of Append node (Tom)
|
|
Fix for mergejoin plans (Tom)
|
|
Fix TRUNCATE failure on relations with indexes (Tom)
|
|
Avoid database-wide restart on write error (Hiroshi)
|
|
Fix nodeMaterial to honor chgParam by recomputing its output (Tom)
|
|
Fix VACUUM problem with moving chain of update tuples when source and
|
|
destination of a tuple lie on the same page (Tom)
|
|
Fix user.c CommandCounterIncrement (Tom)
|
|
Fix for AM/PM boundary problem in to_char() (Karel Zak)
|
|
Fix TIME aggregate handling (Tom)
|
|
Fix to_char() to avoid coredump on NULL input (Tom)
|
|
Buffer fix (Tom)
|
|
Fix for inserting/copying longer multibyte strings into char() data
|
|
types (Tatsuo)
|
|
Fix for crash of backend, on abort (Tom)
|
|
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Release 7.0.2
|
|
|
|
Release date: 2000-06-05
|
|
|
|
This is a repackaging of 7.0.1 with added documentation.
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Migration to version 7.0.2
|
|
|
|
A dump/restore is *not* required for those running 7.*.
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Changes
|
|
|
|
Added documentation to tarball.
|
|
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Release 7.0.1
|
|
|
|
Release date: 2000-06-01
|
|
|
|
This is a cleanup release for 7.0.
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Migration to version 7.0.1
|
|
|
|
A dump/restore is *not* required for those running 7.0.
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Changes
|
|
|
|
Fix many CLUSTER failures (Tom)
|
|
Allow ALTER TABLE RENAME works on indexes (Tom)
|
|
Fix plpgsql to handle datetime->timestamp and timespan->interval (Bruce)
|
|
New configure --with-setproctitle switch to use setproctitle() (Marc, Bruce)
|
|
Fix the off by one errors in ResultSet from 6.5.3, and more.
|
|
jdbc ResultSet fixes (Joseph Shraibman)
|
|
optimizer tunings (Tom)
|
|
Fix create user for pgaccess
|
|
Fix for UNLISTEN failure
|
|
IRIX fixes (David Kaelbling)
|
|
QNX fixes (Andreas Kardos)
|
|
Reduce COPY IN lock level (Tom)
|
|
Change libpqeasy to use PQconnectdb() style parameters (Bruce)
|
|
Fix pg_dump to handle OID indexes (Tom)
|
|
Fix small memory leak (Tom)
|
|
Solaris fix for createdb/dropdb (Tatsuo)
|
|
Fix for non-blocking connections (Alfred Perlstein)
|
|
Fix improper recovery after RENAME TABLE failures (Tom)
|
|
Copy pg_ident.conf.sample into /lib directory in install (Bruce)
|
|
Add SJIS UDC (NEC selection IBM kanji) support (Eiji Tokuya)
|
|
Fix too long syslog message (Tatsuo)
|
|
Fix problem with quoted indexes that are too long (Tom)
|
|
JDBC ResultSet.getTimestamp() fix (Gregory Krasnow & Floyd Marinescu)
|
|
ecpg changes (Michael)
|
|
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Release 7.0
|
|
|
|
Release date: 2000-05-08
|
|
|
|
This release contains improvements in many areas, demonstrating the
|
|
continued growth of PostgreSQL. There are more improvements and fixes in
|
|
7.0 than in any previous release. The developers have confidence that this
|
|
is the best release yet; we do our best to put out only solid releases,
|
|
and this one is no exception.
|
|
|
|
Major changes in this release:
|
|
|
|
Foreign Keys
|
|
|
|
Foreign keys are now implemented, with the exception of PARTIAL
|
|
MATCH foreign keys. Many users have been asking for this feature,
|
|
and we are pleased to offer it.
|
|
|
|
Optimizer Overhaul
|
|
|
|
Continuing on work started a year ago, the optimizer has been
|
|
improved, allowing better query plan selection and faster
|
|
performance with less memory usage.
|
|
|
|
Updated psql
|
|
|
|
psql, our interactive terminal monitor, has been updated with a
|
|
variety of new features. See the psql manual page for details.
|
|
|
|
Join Syntax
|
|
|
|
SQL92 join syntax is now supported, though only as INNER JOINs for
|
|
this release. JOIN, NATURAL JOIN, JOIN/USING, JOIN/ON are
|
|
available, as are column correlation names.
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Migration to version 7.0
|
|
|
|
A dump/restore using pg_dump is required for those wishing to migrate data
|
|
from any previous release of PostgreSQL. For those upgrading from 6.5.*,
|
|
you may instead use pg_upgrade to upgrade to this release; however, a full
|
|
dump/reload installation is always the most robust method for upgrades.
|
|
|
|
Interface and compatibility issues to consider for the new release
|
|
include:
|
|
|
|
* The date/time types datetime and timespan have been superseded by the
|
|
SQL92-defined types timestamp and interval. Although there has been
|
|
some effort to ease the transition by allowing PostgreSQL to recognize
|
|
the deprecated type names and translate them to the new type names,
|
|
this mechanism may not be completely transparent to your existing
|
|
application.
|
|
|
|
* The optimizer has been substantially improved in the area of query
|
|
cost estimation. In some cases, this will result in decreased query
|
|
times as the optimizer makes a better choice for the preferred plan.
|
|
However, in a small number of cases, usually involving pathological
|
|
distributions of data, your query times may go up. If you are dealing
|
|
with large amounts of data, you may want to check your queries to
|
|
verify performance.
|
|
|
|
* The JDBC and ODBC interfaces have been upgraded and extended.
|
|
|
|
* The string function CHAR_LENGTH is now a native function. Previous
|
|
versions translated this into a call to LENGTH, which could result in
|
|
ambiguity with other types implementing LENGTH such as the geometric
|
|
types.
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Changes
|
|
|
|
Bug Fixes
|
|
---------
|
|
Prevent function calls exceeding maximum number of arguments (Tom)
|
|
Improve CASE construct (Tom)
|
|
Fix SELECT coalesce(f1,0) FROM int4_tbl GROUP BY f1 (Tom)
|
|
Fix SELECT sentence.words[0] FROM sentence GROUP BY sentence.words[0] (Tom)
|
|
Fix GROUP BY scan bug (Tom)
|
|
Improvements in SQL grammar processing (Tom)
|
|
Fix for views involved in INSERT ... SELECT ... (Tom)
|
|
Fix for SELECT a/2, a/2 FROM test_missing_target GROUP BY a/2 (Tom)
|
|
Fix for subselects in INSERT ... SELECT (Tom)
|
|
Prevent INSERT ... SELECT ... ORDER BY (Tom)
|
|
Fixes for relations greater than 2GB, including vacuum
|
|
Improve propagating system table changes to other backends (Tom)
|
|
Improve propagating user table changes to other backends (Tom)
|
|
Fix handling of temp tables in complex situations (Bruce, Tom)
|
|
Allow table locking at table open, improving concurrent reliability (Tom)
|
|
Properly quote sequence names in pg_dump (Ross J. Reedstrom)
|
|
Prevent DROP DATABASE while others accessing
|
|
Prevent any rows from being returned by GROUP BY if no rows processed (Tom)
|
|
Fix SELECT COUNT(1) FROM table WHERE ...' if no rows matching WHERE (Tom)
|
|
Fix pg_upgrade so it works for MVCC (Tom)
|
|
Fix for SELECT ... WHERE x IN (SELECT ... HAVING SUM(x) > 1) (Tom)
|
|
Fix for "f1 datetime DEFAULT 'now'" (Tom)
|
|
Fix problems with CURRENT_DATE used in DEFAULT (Tom)
|
|
Allow comment-only lines, and ;;; lines too. (Tom)
|
|
Improve recovery after failed disk writes, disk full (Hiroshi)
|
|
Fix cases where table is mentioned in FROM but not joined (Tom)
|
|
Allow HAVING clause without aggregate functions (Tom)
|
|
Fix for "--" comment and no trailing newline, as seen in perl interface
|
|
Improve pg_dump failure error reports (Bruce)
|
|
Allow sorts and hashes to exceed 2GB file sizes (Tom)
|
|
Fix for pg_dump dumping of inherited rules (Tom)
|
|
Fix for NULL handling comparisons (Tom)
|
|
Fix inconsistent state caused by failed CREATE/DROP commands (Hiroshi)
|
|
Fix for dbname with dash
|
|
Prevent DROP INDEX from interfering with other backends (Tom)
|
|
Fix file descriptor leak in verify_password()
|
|
Fix for "Unable to identify an operator =$" problem
|
|
Fix ODBC so no segfault if CommLog and Debug enabled (Dirk Niggemann)
|
|
Fix for recursive exit call (Massimo)
|
|
Fix for extra-long timezones (Jeroen van Vianen)
|
|
Make pg_dump preserve primary key information (Peter E)
|
|
Prevent databases with single quotes (Peter E)
|
|
Prevent DROP DATABASE inside transaction (Peter E)
|
|
ecpg memory leak fixes (Stephen Birch)
|
|
Fix for SELECT null::text, SELECT int4fac(null) and SELECT 2 + (null) (Tom)
|
|
Y2K timestamp fix (Massimo)
|
|
Fix for VACUUM 'HEAP_MOVED_IN was not expected' errors (Tom)
|
|
Fix for views with tables/columns containing spaces (Tom)
|
|
Prevent permissions on indexes (Peter E)
|
|
Fix for spinlock stuck problem when error is generated (Hiroshi)
|
|
Fix ipcclean on Linux
|
|
Fix handling of NULL constraint conditions (Tom)
|
|
Fix memory leak in odbc driver (Nick Gorham)
|
|
Fix for permission check on UNION tables (Tom)
|
|
Fix to allow SELECT 'a' LIKE 'a' (Tom)
|
|
Fix for SELECT 1 + NULL (Tom)
|
|
Fixes to CHAR
|
|
Fix log() on numeric type (Tom)
|
|
Deprecate ':' and ';' operators
|
|
Allow vacuum of temporary tables
|
|
Disallow inherited columns with the same name as new columns
|
|
Recover or force failure when disk space is exhausted (Hiroshi)
|
|
Fix INSERT INTO ... SELECT with AS columns matching result columns
|
|
Fix INSERT ... SELECT ... GROUP BY groups by target columns not source columns (Tom)
|
|
Fix CREATE TABLE test (a char(5) DEFAULT text '', b int4) with INSERT (Tom)
|
|
Fix UNION with LIMIT
|
|
Fix CREATE TABLE x AS SELECT 1 UNION SELECT 2
|
|
Fix CREATE TABLE test(col char(2) DEFAULT user)
|
|
Fix mismatched types in CREATE TABLE ... DEFAULT
|
|
Fix SELECT * FROM pg_class where oid in (0,-1)
|
|
Fix SELECT COUNT('asdf') FROM pg_class WHERE oid=12
|
|
Prevent user who can create databases can modifying pg_database table (Peter E)
|
|
Fix btree to give a useful elog when key > 1/2 (page - overhead) (Tom)
|
|
Fix INSERT of 0.0 into DECIMAL(4,4) field (Tom)
|
|
|
|
Enhancements
|
|
------------
|
|
New CLI interface include file sqlcli.h, based on SQL3/SQL98
|
|
Remove all limits on query length, row length limit still exists (Tom)
|
|
Update jdbc protocol to 2.0 (Jens Glaser <jens@jens.de>)
|
|
Add TRUNCATE command to quickly truncate relation (Mike Mascari)
|
|
Fix to give super user and createdb user proper update catalog rights (Peter E)
|
|
Allow ecpg bool variables to have NULL values (Christof)
|
|
Issue ecpg error if NULL value for variable with no NULL indicator (Christof)
|
|
Allow ^C to cancel COPY command (Massimo)
|
|
Add SET FSYNC and SHOW PG_OPTIONS commands(Massimo)
|
|
Function name overloading for dynamically-loaded C functions (Frankpitt)
|
|
Add CmdTuples() to libpq++(Vince)
|
|
New CREATE CONSTRAINT TRIGGER and SET CONSTRAINTS commands(Jan)
|
|
Allow CREATE FUNCTION/WITH clause to be used for all language types
|
|
configure --enable-debug adds -g (Peter E)
|
|
configure --disable-debug removes -g (Peter E)
|
|
Allow more complex default expressions (Tom)
|
|
First real FOREIGN KEY constraint trigger functionality (Jan)
|
|
Add FOREIGN KEY ... MATCH FULL ... ON DELETE CASCADE (Jan)
|
|
Add FOREIGN KEY ... MATCH <unspecified> referential actions (Don Baccus)
|
|
Allow WHERE restriction on ctid (physical heap location) (Hiroshi)
|
|
Move pginterface from contrib to interface directory, rename to pgeasy (Bruce)
|
|
Change pgeasy connectdb() parameter ordering (Bruce)
|
|
Require SELECT DISTINCT target list to have all ORDER BY columns (Tom)
|
|
Add Oracle's COMMENT ON command (Mike Mascari <mascarim@yahoo.com>)
|
|
libpq's PQsetNoticeProcessor function now returns previous hook(Peter E)
|
|
Prevent PQsetNoticeProcessor from being set to NULL (Peter E)
|
|
Make USING in COPY optional (Bruce)
|
|
Allow subselects in the target list (Tom)
|
|
Allow subselects on the left side of comparison operators (Tom)
|
|
New parallel regression test (Jan)
|
|
Change backend-side COPY to write files with permissions 644 not 666 (Tom)
|
|
Force permissions on PGDATA directory to be secure, even if it exists (Tom)
|
|
Added psql LASTOID variable to return last inserted oid (Peter E)
|
|
Allow concurrent vacuum and remove pg_vlock vacuum lock file (Tom)
|
|
Add permissions check for vacuum (Peter E)
|
|
New libpq functions to allow asynchronous connections: PQconnectStart(),
|
|
PQconnectPoll(), PQresetStart(), PQresetPoll(), PQsetenvStart(),
|
|
PQsetenvPoll(), PQsetenvAbort (Ewan Mellor)
|
|
New libpq PQsetenv() function (Ewan Mellor)
|
|
create/alter user extension (Peter E)
|
|
New postmaster.pid and postmaster.opts under $PGDATA (Tatsuo)
|
|
New scripts for create/drop user/db (Peter E)
|
|
Major psql overhaul (Peter E)
|
|
Add const to libpq interface (Peter E)
|
|
New libpq function PQoidValue (Peter E)
|
|
Show specific non-aggregate causing problem with GROUP BY (Tom)
|
|
Make changes to pg_shadow recreate pg_pwd file (Peter E)
|
|
Add aggregate(DISTINCT ...) (Tom)
|
|
Allow flag to control COPY input/output of NULLs (Peter E)
|
|
Make postgres user have a password by default (Peter E)
|
|
Add CREATE/ALTER/DROP GROUP (Peter E)
|
|
All administration scripts now support --long options (Peter E, Karel)
|
|
Vacuumdb script now supports --all option (Peter E)
|
|
ecpg new portable FETCH syntax
|
|
Add ecpg EXEC SQL IFDEF, EXEC SQL IFNDEF, EXEC SQL ELSE, EXEC SQL ELIF
|
|
and EXEC SQL ENDIF directives
|
|
Add pg_ctl script to control backend start-up (Tatsuo)
|
|
Add postmaster.opts.default file to store start-up flags (Tatsuo)
|
|
Allow --with-mb=SQL_ASCII
|
|
Increase maximum number of index keys to 16 (Bruce)
|
|
Increase maximum number of function arguments to 16 (Bruce)
|
|
Allow configuration of maximum number of index keys and arguments (Bruce)
|
|
Allow unprivileged users to change their passwords (Peter E)
|
|
Password authentication enabled; required for new users (Peter E)
|
|
Disallow dropping a user who owns a database (Peter E)
|
|
Change initdb option --with-mb to --enable-multibyte
|
|
Add option for initdb to prompts for superuser password (Peter E)
|
|
Allow complex type casts like col::numeric(9,2) and col::int2::float8 (Tom)
|
|
Updated user interfaces on initdb, initlocation, pg_dump, ipcclean (Peter E)
|
|
New pg_char_to_encoding() and pg_encoding_to_char() functions (Tatsuo)
|
|
Libpq non-blocking mode (Alfred Perlstein)
|
|
Improve conversion of types in casts that don't specify a length
|
|
New plperl internal programming language (Mark Hollomon)
|
|
Allow COPY IN to read file that do not end with a newline (Tom)
|
|
Indicate when long identifiers are truncated (Tom)
|
|
Allow aggregates to use type equivalency (Peter E)
|
|
Add Oracle's to_char(), to_date(), to_datetime(), to_timestamp(), to_number()
|
|
conversion functions (Karel Zak <zakkr@zf.jcu.cz>)
|
|
Add SELECT DISTINCT ON (expr [, expr ...]) targetlist ... (Tom)
|
|
Check to be sure ORDER BY is compatible with the DISTINCT operation (Tom)
|
|
Add NUMERIC and int8 types to ODBC
|
|
Improve EXPLAIN results for Append, Group, Agg, Unique (Tom)
|
|
Add ALTER TABLE ... ADD FOREIGN KEY (Stephan Szabo)
|
|
Allow SELECT .. FOR UPDATE in PL/pgSQL (Hiroshi)
|
|
Enable backward sequential scan even after reaching EOF (Hiroshi)
|
|
Add btree indexing of boolean values, >= and <= (Don Baccus)
|
|
Print current line number when COPY FROM fails (Massimo)
|
|
Recognize POSIX time zone e.g. "PST+8" and "GMT-8" (Thomas)
|
|
Add DEC as synonym for DECIMAL (Thomas)
|
|
Add SESSION_USER as SQL92 keyword, same as CURRENT_USER (Thomas)
|
|
Implement SQL92 column aliases (aka correlation names) (Thomas)
|
|
Implement SQL92 join syntax (Thomas)
|
|
Make INTERVAL reserved word allowed as a column identifier (Thomas)
|
|
Implement REINDEX command (Hiroshi)
|
|
Accept ALL in aggregate function SUM(ALL col) (Tom)
|
|
Prevent GROUP BY from using column aliases (Tom)
|
|
New psql \encoding option (Tatsuo)
|
|
Allow PQrequestCancel() to terminate when in waiting-for-lock state (Hiroshi)
|
|
Allow negation of a negative number in all cases
|
|
Add ecpg descriptors (Christof, Michael)
|
|
Allow CREATE VIEW v AS SELECT f1::char(8) FROM tbl
|
|
Allow casts with length, like foo::char(8)
|
|
New libpq functions PQsetClientEncoding(), PQclientEncoding() (Tatsuo)
|
|
Add support for SJIS user defined characters (Tatsuo)
|
|
Larger views/rules supported
|
|
Make libpq's PQconndefaults() thread-safe (Tom)
|
|
Disable // as comment to be ANSI conforming, should use -- (Tom)
|
|
Allow column aliases on views CREATE VIEW name (collist)
|
|
Fixes for views with subqueries (Tom)
|
|
Allow UPDATE table SET fld = (SELECT ...) (Tom)
|
|
SET command options no longer require quotes
|
|
Update pgaccess to 0.98.6
|
|
New SET SEED command
|
|
New pg_options.sample file
|
|
New SET FSYNC command (Massimo)
|
|
Allow pg_descriptions when creating tables
|
|
Allow pg_descriptions when creating types, columns, and functions
|
|
Allow psql \copy to allow delimiters (Peter E)
|
|
Allow psql to print nulls as distinct from "" [null] (Peter E)
|
|
|
|
Types
|
|
-----
|
|
Many array fixes (Tom)
|
|
Allow bare column names to be subscripted as arrays (Tom)
|
|
Improve type casting of int and float constants (Tom)
|
|
Cleanups for int8 inputs, range checking, and type conversion (Tom)
|
|
Fix for SELECT timespan('21:11:26'::time) (Tom)
|
|
netmask('x.x.x.x/0') is 255.255.255.255 instead of 0.0.0.0 (Oleg Sharoiko)
|
|
Add btree index on NUMERIC (Jan)
|
|
Perl fix for large objects containing NUL characters (Douglas Thomson)
|
|
ODBC fix for for large objects (free)
|
|
Fix indexing of cidr data type
|
|
Fix for Ethernet MAC addresses (macaddr type) comparisons
|
|
Fix for date/time types when overflows happened in computations (Tom)
|
|
Allow array on int8 (Peter E)
|
|
Fix for rounding/overflow of NUMERIC type, like NUMERIC(4,4) (Tom)
|
|
Allow NUMERIC arrays
|
|
Fix bugs in NUMERIC ceil() and floor() functions (Tom)
|
|
Make char_length()/octet_length including trailing blanks (Tom)
|
|
Made abstime/reltime use int4 instead of time_t (Peter E)
|
|
New lztext data type for compressed text fields
|
|
Revise code to handle coercion of int and float constants (Tom)
|
|
Start at new code to implement a BIT and BIT VARYING type (Adriaan Joubert)
|
|
NUMERIC now accepts scientific notation (Tom)
|
|
NUMERIC to int4 rounds (Tom)
|
|
Convert float4/8 to NUMERIC properly (Tom)
|
|
Allow type conversion with NUMERIC (Thomas)
|
|
Make ISO date style (2000-02-16 09:33) the default (Thomas)
|
|
Add NATIONAL CHAR [ VARYING ] (Thomas)
|
|
Allow NUMERIC round and trunc to accept negative scales (Tom)
|
|
New TIME WITH TIME ZONE type (Thomas)
|
|
Add MAX()/MIN() on time type (Thomas)
|
|
Add abs(), mod(), fac() for int8 (Thomas)
|
|
Rename functions to round(), sqrt(), cbrt(), pow() for float8 (Thomas)
|
|
Add transcendental math functions (e.g. sin(), acos()) for float8 (Thomas)
|
|
Add exp() and ln() for NUMERIC type
|
|
Rename NUMERIC power() to pow() (Thomas)
|
|
Improved TRANSLATE() function (Edwin Ramirez, Tom)
|
|
Allow X=-Y operators (Tom)
|
|
Allow SELECT float8(COUNT(*))/(SELECT COUNT(*) FROM t) FROM t GROUP BY f1; (Tom)
|
|
Allow LOCALE to use indexes in regular expression searches (Tom)
|
|
Allow creation of functional indexes to use default types
|
|
|
|
Performance
|
|
-----------
|
|
Prevent exponential space consumption with many AND's and OR's (Tom)
|
|
Collect attribute selectivity values for system columns (Tom)
|
|
Reduce memory usage of aggregates (Tom)
|
|
Fix for LIKE optimization to use indexes with multibyte encodings (Tom)
|
|
Fix r-tree index optimizer selectivity (Thomas)
|
|
Improve optimizer selectivity computations and functions (Tom)
|
|
Optimize btree searching for cases where many equal keys exist (Tom)
|
|
Enable fast LIKE index processing only if index present (Tom)
|
|
Re-use free space on index pages with duplicates (Tom)
|
|
Improve hash join processing (Tom)
|
|
Prevent descending sort if result is already sorted(Hiroshi)
|
|
Allow commuting of index scan query qualifications (Tom)
|
|
Prefer index scans in cases where ORDER BY/GROUP BY is required (Tom)
|
|
Allocate large memory requests in fix-sized chunks for performance (Tom)
|
|
Fix vacuum's performance by reducing memory allocation requests (Tom)
|
|
Implement constant-expression simplification (Bernard Frankpitt, Tom)
|
|
Use secondary columns to be used to determine start of index scan (Hiroshi)
|
|
Prevent quadruple use of disk space when doing internal sorting (Tom)
|
|
Faster sorting by calling fewer functions (Tom)
|
|
Create system indexes to match all system caches (Bruce, Hiroshi)
|
|
Make system caches use system indexes (Bruce)
|
|
Make all system indexes unique (Bruce)
|
|
Improve pg_statistics management for VACUUM speed improvement (Tom)
|
|
Flush backend cache less frequently (Tom, Hiroshi)
|
|
COPY now reuses previous memory allocation, improving performance (Tom)
|
|
Improve optimization cost estimation (Tom)
|
|
Improve optimizer estimate of range queries x > lowbound AND x < highbound (Tom)
|
|
Use DNF instead of CNF where appropriate (Tom, Taral)
|
|
Further cleanup for OR-of-AND WHERE-clauses (Tom)
|
|
Make use of index in OR clauses (x = 1 AND y = 2) OR (x = 2 AND y = 4) (Tom)
|
|
Smarter optimizer computations for random index page access (Tom)
|
|
New SET variable to control optimizer costs (Tom)
|
|
Optimizer queries based on LIMIT, OFFSET, and EXISTS qualifications (Tom)
|
|
Reduce optimizer internal housekeeping of join paths for speedup (Tom)
|
|
Major subquery speedup (Tom)
|
|
Fewer fsync writes when fsync is not disabled (Tom)
|
|
Improved LIKE optimizer estimates (Tom)
|
|
Prevent fsync in SELECT-only queries (Vadim)
|
|
Make index creation use psort code, because it is now faster (Tom)
|
|
Allow creation of sort temp tables > 1 Gig
|
|
|
|
Source Tree Changes
|
|
-------------------
|
|
Fix for linux PPC compile
|
|
New generic expression-tree-walker subroutine (Tom)
|
|
Change form() to varargform() to prevent portability problems
|
|
Improved range checking for large integers on Alphas
|
|
Clean up #include in /include directory (Bruce)
|
|
Add scripts for checking includes (Bruce)
|
|
Remove un-needed #include's from *.c files (Bruce)
|
|
Change #include's to use <> and "" as appropriate (Bruce)
|
|
Enable WIN32 compilation of libpq
|
|
Alpha spinlock fix from Uncle George <gatgul@voicenet.com>
|
|
Overhaul of optimizer data structures (Tom)
|
|
Fix to cygipc library (Yutaka Tanida)
|
|
Allow pgsql to work on newer Cygwin snapshots (Dan)
|
|
New catalog version number (Tom)
|
|
Add Linux ARM
|
|
Rename heap_replace to heap_update
|
|
Update for QNX (Dr. Andreas Kardos)
|
|
New platform-specific regression handling (Tom)
|
|
Rename oid8 -> oidvector and int28 -> int2vector (Bruce)
|
|
Included all yacc and lex files into the distribution (Peter E.)
|
|
Remove lextest, no longer needed (Peter E)
|
|
Fix for libpq and psql on Win32 (Magnus)
|
|
Internally change datetime and timespan into timestamp and interval (Thomas)
|
|
Fix for plpgsql on BSDI
|
|
Add SQL_ASCII test case to the regression test (Tatsuo)
|
|
configure --with-mb now deprecated (Tatsuo)
|
|
NT fixes
|
|
NetBSD fixes (Johnny C. Lam <lamj@stat.cmu.edu>)
|
|
Fixes for Alpha compiles
|
|
New multibyte encodings
|
|
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Release 6.5.3
|
|
|
|
Release date: 1999-10-13
|
|
|
|
This is basically a cleanup release for 6.5.2. We have added a new
|
|
PgAccess that was missing in 6.5.2, and installed an NT-specific fix.
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Migration to version 6.5.3
|
|
|
|
A dump/restore is *not* required for those running 6.5.*.
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Changes
|
|
|
|
Updated version of pgaccess 0.98
|
|
NT-specific patch
|
|
Fix dumping rules on inherited tables
|
|
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Release 6.5.2
|
|
|
|
Release date: 1999-09-15
|
|
|
|
This is basically a cleanup release for 6.5.1. We have fixed a variety of
|
|
problems reported by 6.5.1 users.
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Migration to version 6.5.2
|
|
|
|
A dump/restore is *not* required for those running 6.5.*.
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Changes
|
|
|
|
subselect+CASE fixes(Tom)
|
|
Add SHLIB_LINK setting for solaris_i386 and solaris_sparc ports(Daren Sefcik)
|
|
Fixes for CASE in WHERE join clauses(Tom)
|
|
Fix BTScan abort(Tom)
|
|
Repair the check for redundant UNIQUE and PRIMARY KEY indexes(Thomas)
|
|
Improve it so that it checks for multi-column constraints(Thomas)
|
|
Fix for Win32 making problem with MB enabled(Hiroki Kataoka)
|
|
Allow BSD yacc and bison to compile pl code(Bruce)
|
|
Fix SET NAMES working
|
|
int8 fixes(Thomas)
|
|
Fix vacuum's memory consumption(Hiroshi,Tatsuo)
|
|
Reduce the total memory consumption of vacuum(Tom)
|
|
Fix for timestamp(datetime)
|
|
Rule deparsing bugfixes(Tom)
|
|
Fix quoting problems in mkMakefile.tcldefs.sh.in and mkMakefile.tkdefs.sh.in(Tom)
|
|
This is to re-use space on index pages freed by vacuum(Vadim)
|
|
document -x for pg_dump(Bruce)
|
|
Fix for unary operators in rule deparser(Tom)
|
|
Comment out FileUnlink of excess segments during mdtruncate()(Tom)
|
|
Irix linking fix from Yu Cao >yucao@falcon.kla-tencor.com<
|
|
Repair logic error in LIKE: should not return LIKE_ABORT
|
|
when reach end of pattern before end of text(Tom)
|
|
Repair incorrect cleanup of heap memory allocation during transaction abort(Tom)
|
|
Updated version of pgaccess 0.98
|
|
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Release 6.5.1
|
|
|
|
Release date: 1999-07-15
|
|
|
|
This is basically a cleanup release for 6.5. We have fixed a variety of
|
|
problems reported by 6.5 users.
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Migration to version 6.5.1
|
|
|
|
A dump/restore is *not* required for those running 6.5.
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Changes
|
|
|
|
Add NT README file
|
|
Portability fixes for linux_ppc, Irix, linux_alpha, OpenBSD, alpha
|
|
Remove QUERY_LIMIT, use SELECT...LIMIT
|
|
Fix for EXPLAIN on inheritance(Tom)
|
|
Patch to allow vacuum on multi-segment tables(Hiroshi)
|
|
R-Tree optimizer selectivity fix(Tom)
|
|
ACL file descriptor leak fix(Atsushi Ogawa)
|
|
New expresssion subtree code(Tom)
|
|
Avoid disk writes for read-only transactions(Vadim)
|
|
Fix for removal of temp tables if last transaction was aborted(Bruce)
|
|
Fix to prevent too large tuple from being created(Bruce)
|
|
plpgsql fixes
|
|
Allow port numbers 32k - 64k(Bruce)
|
|
Add ^ precidence(Bruce)
|
|
Rename sort files called pg_temp to pg_sorttemp(Bruce)
|
|
Fix for microseconds in time values(Tom)
|
|
Tutorial source cleanup
|
|
New linux_m68k port
|
|
Fix for sorting of NULL's in some cases(Tom)
|
|
Shared library dependencies fixed (Tom)
|
|
Fixed glitches affecting GROUP BY in subselects(Tom)
|
|
Fix some compiler warnings (Tomoaki Nishiyama)
|
|
Add Win1250 (Czech) support (Pavel Behal)
|
|
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Release 6.5
|
|
|
|
Release date: 1999-06-09
|
|
|
|
This release marks a major step in the development team's mastery of the
|
|
source code we inherited from Berkeley. You will see we are now easily
|
|
adding major features, thanks to the increasing size and experience of our
|
|
world-wide development team.
|
|
|
|
Here is a brief summary of the more notable changes:
|
|
|
|
Multi-version concurrency control(MVCC)
|
|
|
|
This removes our old table-level locking, and replaces it with a
|
|
locking system that is superior to most commercial database
|
|
systems. In a traditional system, each row that is modified is
|
|
locked until committed, preventing reads by other users. MVCC uses
|
|
the natural multi-version nature of PostgreSQL to allow readers to
|
|
continue reading consistent data during writer activity. Writers
|
|
continue to use the compact pg_log transaction system. This is all
|
|
performed without having to allocate a lock for every row like
|
|
traditional database systems. So, basically, we no longer are
|
|
restricted by simple table-level locking; we have something better
|
|
than row-level locking.
|
|
|
|
Hot backups from pg_dump
|
|
|
|
pg_dump takes advantage of the new MVCC features to give a
|
|
consistent database dump/backup while the database stays online
|
|
and available for queries.
|
|
|
|
Numeric data type
|
|
|
|
We now have a true numeric data type, with user-specified
|
|
precision.
|
|
|
|
Temporary tables
|
|
|
|
Temporary tables are guaranteed to have unique names within a
|
|
database session, and are destroyed on session exit.
|
|
|
|
New SQL features
|
|
|
|
We now have CASE, INTERSECT, and EXCEPT statement support. We have
|
|
new LIMIT/OFFSET, SET TRANSACTION ISOLATION LEVEL, SELECT ... FOR
|
|
UPDATE, and an improved LOCK TABLE command.
|
|
|
|
Speedups
|
|
|
|
We continue to speed up PostgreSQL, thanks to the variety of
|
|
talents within our team. We have sped up memory allocation,
|
|
optimization, table joins, and row transfer routines.
|
|
|
|
Ports
|
|
|
|
We continue to expand our port list, this time including Windows
|
|
NT/ix86 and NetBSD/arm32.
|
|
|
|
Interfaces
|
|
|
|
Most interfaces have new versions, and existing functionality has
|
|
been improved.
|
|
|
|
Documentation
|
|
|
|
New and updated material is present throughout the documentation.
|
|
New FAQs have been contributed for SGI and AIX platforms. The
|
|
Tutorial has introductory information on SQL from Stefan
|
|
Simkovics. For the User's Guide, there are reference pages
|
|
covering the postmaster and more utility programs, and a new
|
|
appendix contains details on date/time behavior. The
|
|
Administrator's Guide has a new chapter on troubleshooting from
|
|
Tom Lane. And the Programmer's Guide has a description of query
|
|
processing, also from Stefan, and details on obtaining the
|
|
PostgreSQL source tree via anonymous CVS and CVSup.
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Migration to version 6.5
|
|
|
|
A dump/restore using pg_dump is required for those wishing to migrate data
|
|
from any previous release of PostgreSQL. pg_upgrade can *not* be used to
|
|
upgrade to this release because the on-disk structure of the tables has
|
|
changed compared to previous releases.
|
|
|
|
The new Multi-Version Concurrency Control (MVCC) features can give
|
|
somewhat different behaviors in multi-user environments. *Read and
|
|
understand the following section to ensure that your existing applications
|
|
will give you the behavior you need.*
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Multi-Version Concurrency Control
|
|
|
|
Because readers in 6.5 don't lock data, regardless of transaction
|
|
isolation level, data read by one transaction can be overwritten by
|
|
another. In other words, if a row is returned by "SELECT" it doesn't mean
|
|
that this row really exists at the time it is returned (i.e. sometime
|
|
after the statement or transaction began) nor that the row is protected
|
|
from being deleted or updated by concurrent transactions before the
|
|
current transaction does a commit or rollback.
|
|
|
|
To ensure the actual existence of a row and protect it against concurrent
|
|
updates one must use "SELECT FOR UPDATE" or an appropriate "LOCK TABLE"
|
|
statement. This should be taken into account when porting applications
|
|
from previous releases of PostgreSQL and other environments.
|
|
|
|
Keep the above in mind if you are using "contrib/refint.*" triggers for
|
|
referential integrity. Additional techniques are required now. One way is
|
|
to use "LOCK parent_table IN SHARE ROW EXCLUSIVE MODE" command if a
|
|
transaction is going to update/delete a primary key and use "LOCK
|
|
parent_table IN SHARE MODE" command if a transaction is going to
|
|
update/insert a foreign key.
|
|
|
|
Note: Note that if you run a transaction in SERIALIZABLE mode then you
|
|
must execute the "LOCK" commands above before execution of any DML
|
|
statement ("SELECT/INSERT/DELETE/UPDATE/FETCH/COPY_TO") in the
|
|
transaction.
|
|
|
|
These inconveniences will disappear in the future when the ability to read
|
|
dirty (uncommitted) data (regardless of isolation level) and true
|
|
referential integrity will be implemented.
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Changes
|
|
|
|
Bug Fixes
|
|
---------
|
|
Fix text<->float8 and text<->float4 conversion functions(Thomas)
|
|
Fix for creating tables with mixed-case constraints(Billy)
|
|
Change exp()/pow() behavior to generate error on underflow/overflow(Jan)
|
|
Fix bug in pg_dump -z
|
|
Memory overrun cleanups(Tatsuo)
|
|
Fix for lo_import crash(Tatsuo)
|
|
Adjust handling of data type names to suppress double quotes(Thomas)
|
|
Use type coercion for matching columns and DEFAULT(Thomas)
|
|
Fix deadlock so it only checks once after one second of sleep(Bruce)
|
|
Fixes for aggregates and PL/pgsql(Hiroshi)
|
|
Fix for subquery crash(Vadim)
|
|
Fix for libpq function PQfnumber and case-insensitive names(Bahman Rafatjoo)
|
|
Fix for large object write-in-middle, no extra block, memory consumption(Tatsuo)
|
|
Fix for pg_dump -d or -D and quote special characters in INSERT
|
|
Repair serious problems with dynahash(Tom)
|
|
Fix INET/CIDR portability problems
|
|
Fix problem with selectivity error in ALTER TABLE ADD COLUMN(Bruce)
|
|
Fix executor so mergejoin of different column types works(Tom)
|
|
Fix for Alpha OR selectivity bug
|
|
Fix OR index selectivity problem(Bruce)
|
|
Fix so \d shows proper length for char()/varchar()(Ryan)
|
|
Fix tutorial code(Clark)
|
|
Improve destroyuser checking(Oliver)
|
|
Fix for Kerberos(Rodney McDuff)
|
|
Fix for dropping database while dirty buffers(Bruce)
|
|
Fix so sequence nextval() can be case-sensitive(Bruce)
|
|
Fix !!= operator
|
|
Drop buffers before destroying database files(Bruce)
|
|
Fix case where executor evaluates functions twice(Tatsuo)
|
|
Allow sequence nextval actions to be case-sensitive(Bruce)
|
|
Fix optimizer indexing not working for negative numbers(Bruce)
|
|
Fix for memory leak in executor with fjIsNull
|
|
Fix for aggregate memory leaks(Erik Riedel)
|
|
Allow username containing a dash GRANT permissions
|
|
Cleanup of NULL in inet types
|
|
Clean up system table bugs(Tom)
|
|
Fix problems of PAGER and \? command(Masaaki Sakaida)
|
|
Reduce default multi-segment file size limit to 1GB(Peter)
|
|
Fix for dumping of CREATE OPERATOR(Tom)
|
|
Fix for backward scanning of cursors(Hiroshi Inoue)
|
|
Fix for COPY FROM STDIN when using \i(Tom)
|
|
Fix for subselect is compared inside an expression(Jan)
|
|
Fix handling of error reporting while returning rows(Tom)
|
|
Fix problems with reference to array types(Tom,Jan)
|
|
Prevent UPDATE SET oid(Jan)
|
|
Fix pg_dump so -t option can handle case-sensitive tablenames
|
|
Fixes for GROUP BY in special cases(Tom, Jan)
|
|
Fix for memory leak in failed queries(Tom)
|
|
DEFAULT now supports mixed-case identifiers(Tom)
|
|
Fix for multi-segment uses of DROP/RENAME table, indexes(Ole Gjerde)
|
|
Disable use of pg_dump with both -o and -d options(Bruce)
|
|
Allow pg_dump to properly dump GROUP permissions(Bruce)
|
|
Fix GROUP BY in INSERT INTO table SELECT * FROM table2(Jan)
|
|
Fix for computations in views(Jan)
|
|
Fix for aggregates on array indexes(Tom)
|
|
Fix for DEFAULT handles single quotes in value requiring too many quotes
|
|
Fix security problem with non-super users importing/exporting large objects(Tom)
|
|
Rollback of transaction that creates table cleaned up properly(Tom)
|
|
Fix to allow long table and column names to generate proper serial names(Tom)
|
|
|
|
Enhancements
|
|
------------
|
|
Add "vacuumdb" utility
|
|
Speed up libpq by allocating memory better(Tom)
|
|
EXPLAIN all indexes used(Tom)
|
|
Implement CASE, COALESCE, NULLIF expression(Thomas)
|
|
New pg_dump table output format(Constantin)
|
|
Add string min()/max() functions(Thomas)
|
|
Extend new type coercion techniques to aggregates(Thomas)
|
|
New moddatetime contrib(Terry)
|
|
Update to pgaccess 0.96(Constantin)
|
|
Add routines for single-byte "char" type(Thomas)
|
|
Improved substr() function(Thomas)
|
|
Improved multibyte handling(Tatsuo)
|
|
Multi-version concurrency control/MVCC(Vadim)
|
|
New Serialized mode(Vadim)
|
|
Fix for tables over 2gigs(Peter)
|
|
New SET TRANSACTION ISOLATION LEVEL(Vadim)
|
|
New LOCK TABLE IN ... MODE(Vadim)
|
|
Update ODBC driver(Byron)
|
|
New NUMERIC data type(Jan)
|
|
New SELECT FOR UPDATE(Vadim)
|
|
Handle "NaN" and "Infinity" for input values(Jan)
|
|
Improved date/year handling(Thomas)
|
|
Improved handling of backend connections(Magnus)
|
|
New options ELOG_TIMESTAMPS and USE_SYSLOG options for log files(Massimo)
|
|
New TCL_ARRAYS option(Massimo)
|
|
New INTERSECT and EXCEPT(Stefan)
|
|
New pg_index.indisprimary for primary key tracking(D'Arcy)
|
|
New pg_dump option to allow dropping of tables before creation(Brook)
|
|
Speedup of row output routines(Tom)
|
|
New READ COMMITTED isolation level(Vadim)
|
|
New TEMP tables/indexes(Bruce)
|
|
Prevent sorting if result is already sorted(Jan)
|
|
New memory allocation optimization(Jan)
|
|
Allow psql to do \p\g(Bruce)
|
|
Allow multiple rule actions(Jan)
|
|
Added LIMIT/OFFSET functionality(Jan)
|
|
Improve optimizer when joining a large number of tables(Bruce)
|
|
New intro to SQL from S. Simkovics' Master's Thesis (Stefan, Thomas)
|
|
New intro to backend processing from S. Simkovics' Master's Thesis (Stefan)
|
|
Improved int8 support(Ryan Bradetich, Thomas, Tom)
|
|
New routines to convert between int8 and text/varchar types(Thomas)
|
|
New bushy plans, where meta-tables are joined(Bruce)
|
|
Enable right-hand queries by default(Bruce)
|
|
Allow reliable maximum number of backends to be set at configure time
|
|
(--with-maxbackends and postmaster switch (-N backends))(Tom)
|
|
GEQO default now 10 tables because of optimizer speedups(Tom)
|
|
Allow NULL=Var for MS-SQL portability(Michael, Bruce)
|
|
Modify contrib check_primary_key() so either "automatic" or "dependent"(Anand)
|
|
Allow psql \d on a view show query(Ryan)
|
|
Speedup for LIKE(Bruce)
|
|
Ecpg fixes/features, see src/interfaces/ecpg/ChangeLog file(Michael)
|
|
JDBC fixes/features, see src/interfaces/jdbc/CHANGELOG(Peter)
|
|
Make % operator have precedence like /(Bruce)
|
|
Add new postgres -O option to allow system table structure changes(Bruce)
|
|
Update contrib/pginterface/findoidjoins script(Tom)
|
|
Major speedup in vacuum of deleted rows with indexes(Vadim)
|
|
Allow non-SQL functions to run different versions based on arguments(Tom)
|
|
Add -E option that shows actual queries sent by \dt and friends(Masaaki Sakaida)
|
|
Add version number in start-up banners for psql(Masaaki Sakaida)
|
|
New contrib/vacuumlo removes large objects not referenced(Peter)
|
|
New initialization for table sizes so non-vacuumed tables perform better(Tom)
|
|
Improve error messages when a connection is rejected(Tom)
|
|
Support for arrays of char() and varchar() fields(Massimo)
|
|
Overhaul of hash code to increase reliability and performance(Tom)
|
|
Update to PyGreSQL 2.4(D'Arcy)
|
|
Changed debug options so -d4 and -d5 produce different node displays(Jan)
|
|
New pg_options: pretty_plan, pretty_parse, pretty_rewritten(Jan)
|
|
Better optimization statistics for system table access(Tom)
|
|
Better handling of non-default block sizes(Massimo)
|
|
Improve GEQO optimizer memory consumption(Tom)
|
|
UNION now suppports ORDER BY of columns not in target list(Jan)
|
|
Major libpq++ improvements(Vince Vielhaber)
|
|
pg_dump now uses -z(ACL's) as default(Bruce)
|
|
backend cache, memory speedups(Tom)
|
|
have pg_dump do everything in one snapshot transaction(Vadim)
|
|
fix for large object memory leakage, fix for pg_dumping(Tom)
|
|
INET type now respects netmask for comparisons
|
|
Make VACUUM ANALYZE only use a readlock(Vadim)
|
|
Allow VIEWs on UNIONS(Jan)
|
|
pg_dump now can generate consistent snapshots on active databases(Vadim)
|
|
|
|
Source Tree Changes
|
|
-------------------
|
|
Improve port matching(Tom)
|
|
Portability fixes for SunOS
|
|
Add NT/Win32 backend port and enable dynamic loading(Magnus and Daniel Horak)
|
|
New port to Cobalt Qube(Mips) running Linux(Tatsuo)
|
|
Port to NetBSD/m68k(Mr. Mutsuki Nakajima)
|
|
Port to NetBSD/sun3(Mr. Mutsuki Nakajima)
|
|
Port to NetBSD/macppc(Toshimi Aoki)
|
|
Fix for tcl/tk configuration(Vince)
|
|
Removed CURRENT keyword for rule queries(Jan)
|
|
NT dynamic loading now works(Daniel Horak)
|
|
Add ARM32 support(Andrew McMurry)
|
|
Better support for HPUX 11 and Unixware
|
|
Improve file handling to be more uniform, prevent file descriptor leak(Tom)
|
|
New install commands for plpgsql(Jan)
|
|
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Release 6.4.2
|
|
|
|
Release date: 1998-12-20
|
|
|
|
The 6.4.1 release was improperly packaged. This also has one additional
|
|
bug fix.
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Migration to version 6.4.2
|
|
|
|
A dump/restore is *not* required for those running 6.4.*.
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Changes
|
|
|
|
Fix for datetime constant problem on some platforms(Thomas)
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Release 6.4.1
|
|
|
|
Release date: 1998-12-18
|
|
|
|
This is basically a cleanup release for 6.4. We have fixed a variety of
|
|
problems reported by 6.4 users.
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Migration to version 6.4.1
|
|
|
|
A dump/restore is *not* required for those running 6.4.
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Changes
|
|
|
|
Add pg_dump -N flag to force double quotes around identifiers. This is
|
|
the default(Thomas)
|
|
Fix for NOT in where clause causing crash(Bruce)
|
|
EXPLAIN VERBOSE coredump fix(Vadim)
|
|
Fix shared-library problems on Linux
|
|
Fix test for table existance to allow mixed-case and whitespace in
|
|
the table name(Thomas)
|
|
Fix a couple of pg_dump bugs
|
|
Configure matches template/.similar entries better(Tom)
|
|
Change builtin function names from SPI_* to spi_*
|
|
OR WHERE clause fix(Vadim)
|
|
Fixes for mixed-case table names(Billy)
|
|
contrib/linux/postgres.init.csh/sh fix(Thomas)
|
|
libpq memory overrun fix
|
|
SunOS fixes(Tom)
|
|
Change exp() behavior to generate error on underflow(Thomas)
|
|
pg_dump fixes for memory leak, inheritance constraints, layout change
|
|
update pgaccess to 0.93
|
|
Fix prototype for 64-bit platforms
|
|
Multibyte fixes(Tatsuo)
|
|
New ecpg man page
|
|
Fix memory overruns(Tatsuo)
|
|
Fix for lo_import() crash(Bruce)
|
|
Better search for install program(Tom)
|
|
Timezone fixes(Tom)
|
|
HPUX fixes(Tom)
|
|
Use implicit type coercion for matching DEFAULT values(Thomas)
|
|
Add routines to help with single-byte (internal) character type(Thomas)
|
|
Compilation of libpq for Win32 fixes(Magnus)
|
|
Upgrade to PyGreSQL 2.2(D'Arcy)
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Release 6.4
|
|
|
|
Release date: 1998-10-30
|
|
|
|
There are *many* new features and improvements in this release. Thanks to
|
|
our developers and maintainers, nearly every aspect of the system has
|
|
received some attention since the previous release. Here is a brief,
|
|
incomplete summary:
|
|
|
|
* Views and rules are now functional thanks to extensive new code in the
|
|
rewrite rules system from Jan Wieck. He also wrote a chapter on it for
|
|
the Programmer's Guide.
|
|
|
|
* Jan also contributed a second procedural language, PL/pgSQL, to go
|
|
with the original PL/pgTCL procedural language he contributed last
|
|
release.
|
|
|
|
* We have optional multiple-byte character set support from Tatsuo Iishi
|
|
to complement our existing locale support.
|
|
|
|
* Client/server communications has been cleaned up, with better support
|
|
for asynchronous messages and interrupts thanks to Tom Lane.
|
|
|
|
* The parser will now perform automatic type coercion to match arguments
|
|
to available operators and functions, and to match columns and
|
|
expressions with target columns. This uses a generic mechanism which
|
|
supports the type extensibility features of PostgreSQL. There is a new
|
|
chapter in the User's Guide which covers this topic.
|
|
|
|
* Three new data types have been added. Two types, inet and cidr,
|
|
support various forms of IP network, subnet, and machine addressing.
|
|
There is now an 8-byte integer type available on some platforms. See
|
|
the chapter on data types in the User's Guide for details. A fourth
|
|
type, serial, is now supported by the parser as an amalgam of the int4
|
|
type, a sequence, and a unique index.
|
|
|
|
* Several more SQL92-compatible syntax features have been added,
|
|
including "INSERT DEFAULT VALUES"
|
|
|
|
* The automatic configuration and installation system has received some
|
|
attention, and should be more robust for more platforms than it has
|
|
ever been.
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Migration to version 6.4
|
|
|
|
A dump/restore using pg_dump or pg_dumpall is required for those wishing
|
|
to migrate data from any previous release of PostgreSQL.
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Changes
|
|
|
|
Bug Fixes
|
|
---------
|
|
Fix for a tiny memory leak in PQsetdb/PQfinish(Bryan)
|
|
Remove char2-16 data types, use char/varchar(Darren)
|
|
Pqfn not handles a NOTICE message(Anders)
|
|
Reduced busywaiting overhead for spinlocks with many backends (dg)
|
|
Stuck spinlock detection (dg)
|
|
Fix up "ISO-style" timespan decoding and encoding(Thomas)
|
|
Fix problem with table drop after rollback of transaction(Vadim)
|
|
Change error message and remove non-functional update message(Vadim)
|
|
Fix for COPY array checking
|
|
Fix for SELECT 1 UNION SELECT NULL
|
|
Fix for buffer leaks in large object calls(Pascal)
|
|
Change owner from oid to int4 type(Bruce)
|
|
Fix a bug in the oracle compatibility functions btrim() ltrim() and rtrim()
|
|
Fix for shared invalidation cache overflow(Massimo)
|
|
Prevent file descriptor leaks in failed COPY's(Bruce)
|
|
Fix memory leak in libpgtcl's pg_select(Constantin)
|
|
Fix problems with username/passwords over 8 characters(Tom)
|
|
Fix problems with handling of asynchronous NOTIFY in backend(Tom)
|
|
Fix of many bad system table entries(Tom)
|
|
|
|
Enhancements
|
|
------------
|
|
Upgrade ecpg and ecpglib,see src/interfaces/ecpc/ChangeLog(Michael)
|
|
Show the index used in an EXPLAIN(Zeugswetter)
|
|
EXPLAIN invokes rule system and shows plan(s) for rewritten queries(Jan)
|
|
Multibyte awareness of many data types and functions, via configure(Tatsuo)
|
|
New configure --with-mb option(Tatsuo)
|
|
New initdb --pgencoding option(Tatsuo)
|
|
New createdb -E multibyte option(Tatsuo)
|
|
Select version(); now returns PostgreSQL version(Jeroen)
|
|
Libpq now allows asynchronous clients(Tom)
|
|
Allow cancel from client of backend query(Tom)
|
|
Psql now cancels query with Control-C(Tom)
|
|
Libpq users need not issue dummy queries to get NOTIFY messages(Tom)
|
|
NOTIFY now sends sender's PID, so you can tell whether it was your own(Tom)
|
|
PGresult struct now includes associated error message, if any(Tom)
|
|
Define "tz_hour" and "tz_minute" arguments to date_part()(Thomas)
|
|
Add routines to convert between varchar and bpchar(Thomas)
|
|
Add routines to allow sizing of varchar and bpchar into target columns(Thomas)
|
|
Add bit flags to support timezonehour and minute in data retrieval(Thomas)
|
|
Allow more variations on valid floating point numbers (e.g. ".1", "1e6")(Thomas)
|
|
Fixes for unary minus parsing with leading spaces(Thomas)
|
|
Implement TIMEZONE_HOUR, TIMEZONE_MINUTE per SQL92 specs(Thomas)
|
|
Check for and properly ignore FOREIGN KEY column constraints(Thomas)
|
|
Define USER as synonym for CURRENT_USER per SQL92 specs(Thomas)
|
|
Enable HAVING clause but no fixes elsewhere yet.
|
|
Make "char" type a synonym for "char(1)" (actually implemented as bpchar)(Thomas)
|
|
Save string type if specified for DEFAULT clause handling(Thomas)
|
|
Coerce operations involving different data types(Thomas)
|
|
Allow some index use for columns of different types(Thomas)
|
|
Add capabilities for automatic type conversion(Thomas)
|
|
Cleanups for large objects, so file is truncated on open(Peter)
|
|
Readline cleanups(Tom)
|
|
Allow psql \f \ to make spaces as delimiter(Bruce)
|
|
Pass pg_attribute.atttypmod to the frontend for column field lengths(Tom,Bruce)
|
|
Msql compatibility library in /contrib(Aldrin)
|
|
Remove the requirement that ORDER/GROUP BY clause identifiers be
|
|
included in the target list(David)
|
|
Convert columns to match columns in UNION clauses(Thomas)
|
|
Remove fork()/exec() and only do fork()(Bruce)
|
|
Jdbc cleanups(Peter)
|
|
Show backend status on ps command line(only works on some platforms)(Bruce)
|
|
Pg_hba.conf now has a sameuser option in the database field
|
|
Make lo_unlink take oid param, not int4
|
|
New DISABLE_COMPLEX_MACRO for compilers that can't handle our macros(Bruce)
|
|
Libpgtcl now handles NOTIFY as a Tcl event, need not send dummy queries(Tom)
|
|
libpgtcl cleanups(Tom)
|
|
Add -error option to libpgtcl's pg_result command(Tom)
|
|
New locale patch, see docs/README/locale(Oleg)
|
|
Fix for pg_dump so CONSTRAINT and CHECK syntax is correct(ccb)
|
|
New contrib/lo code for large object orphan removal(Peter)
|
|
New psql command "SET CLIENT_ENCODING TO 'encoding'" for multibytes
|
|
feature, see /doc/README.mb(Tatsuo)
|
|
/contrib/noupdate code to revoke update permission on a column
|
|
Libpq can now be compiled on win32(Magnus)
|
|
Add PQsetdbLogin() in libpq
|
|
New 8-byte integer type, checked by configure for OS support(Thomas)
|
|
Better support for quoted table/column names(Thomas)
|
|
Surround table and column names with double-quotes in pg_dump(Thomas)
|
|
PQreset() now works with passwords(Tom)
|
|
Handle case of GROUP BY target list column number out of range(David)
|
|
Allow UNION in subselects
|
|
Add auto-size to screen to \d? commands(Bruce)
|
|
Use UNION to show all \d? results in one query(Bruce)
|
|
Add \d? field search feature(Bruce)
|
|
Pg_dump issues fewer \connect requests(Tom)
|
|
Make pg_dump -z flag work better, document it in manual page(Tom)
|
|
Add HAVING clause with full support for subselects and unions(Stephan)
|
|
Full text indexing routines in contrib/fulltextindex(Maarten)
|
|
Transaction ids now stored in shared memory(Vadim)
|
|
New PGCLIENTENCODING when issuing COPY command(Tatsuo)
|
|
Support for SQL92 syntax "SET NAMES"(Tatsuo)
|
|
Support for LATIN2-5(Tatsuo)
|
|
Add UNICODE regression test case(Tatsuo)
|
|
Lock manager cleanup, new locking modes for LLL(Vadim)
|
|
Allow index use with OR clauses(Bruce)
|
|
Allows "SELECT NULL ORDER BY 1;"
|
|
Explain VERBOSE prints the plan, and now pretty-prints the plan to
|
|
the postmaster log file(Bruce)
|
|
Add indexes display to \d command(Bruce)
|
|
Allow GROUP BY on functions(David)
|
|
New pg_class.relkind for large objects(Bruce)
|
|
New way to send libpq NOTICE messages to a different location(Tom)
|
|
New \w write command to psql(Bruce)
|
|
New /contrib/findoidjoins scans oid columns to find join relationships(Bruce)
|
|
Allow binary-compatible indexes to be considered when checking for valid
|
|
Indexes for restriction clauses containing a constant(Thomas)
|
|
New ISBN/ISSN code in /contrib/isbn_issn
|
|
Allow NOT LIKE, IN, NOT IN, BETWEEN, and NOT BETWEEN constraint(Thomas)
|
|
New rewrite system fixes many problems with rules and views(Jan)
|
|
* Rules on relations work
|
|
* Event qualifications on insert/update/delete work
|
|
* New OLD variable to reference CURRENT, CURRENT will be remove in future
|
|
* Update rules can reference NEW and OLD in rule qualifications/actions
|
|
* Insert/update/delete rules on views work
|
|
* Multiple rule actions are now supported, surrounded by parentheses
|
|
* Regular users can create views/rules on tables they have RULE permits
|
|
* Rules and views inherit the permissions on the creator
|
|
* No rules at the column level
|
|
* No UPDATE NEW/OLD rules
|
|
* New pg_tables, pg_indexes, pg_rules and pg_views system views
|
|
* Only a single action on SELECT rules
|
|
* Total rewrite overhaul, perhaps for 6.5
|
|
* handle subselects
|
|
* handle aggregates on views
|
|
* handle insert into select from view works
|
|
System indexes are now multi-key(Bruce)
|
|
Oidint2, oidint4, and oidname types are removed(Bruce)
|
|
Use system cache for more system table lookups(Bruce)
|
|
New backend programming language PL/pgSQL in backend/pl(Jan)
|
|
New SERIAL data type, auto-creates sequence/index(Thomas)
|
|
Enable assert checking without a recompile(Massimo)
|
|
User lock enhancements(Massimo)
|
|
New setval() command to set sequence value(Massimo)
|
|
Auto-remove unix socket file on start-up if no postmaster running(Massimo)
|
|
Conditional trace package(Massimo)
|
|
New UNLISTEN command(Massimo)
|
|
Psql and libpq now compile under win32 using win32.mak(Magnus)
|
|
Lo_read no longer stores trailing NULL(Bruce)
|
|
Identifiers are now truncated to 31 characters internally(Bruce)
|
|
Createuser options now availble on the command line
|
|
Code for 64-bit integer supported added, configure tested, int8 type(Thomas)
|
|
Prevent file descriptor leaf from failed COPY(Bruce)
|
|
New pg_upgrade command(Bruce)
|
|
Updated /contrib directories(Massimo)
|
|
New CREATE TABLE DEFAULT VALUES statement available(Thomas)
|
|
New INSERT INTO TABLE DEFAULT VALUES statement available(Thomas)
|
|
New DECLARE and FETCH feature(Thomas)
|
|
libpq's internal structures now not exported(Tom)
|
|
Allow up to 8 key indexes(Bruce)
|
|
Remove ARCHIVE keyword, that is no longer used(Thomas)
|
|
pg_dump -n flag to supress quotes around indentifiers
|
|
disable system columns for views(Jan)
|
|
new INET and CIDR types for network addresses(TomH, Paul)
|
|
no more double quotes in psql output
|
|
pg_dump now dumps views(Terry)
|
|
new SET QUERY_LIMIT(Tatsuo,Jan)
|
|
|
|
Source Tree Changes
|
|
-------------------
|
|
/contrib cleanup(Jun)
|
|
Inline some small functions called for every row(Bruce)
|
|
Alpha/linux fixes
|
|
Hp/UX cleanups(Tom)
|
|
Multibyte regression tests(Soonmyung.)
|
|
Remove --disabled options from configure
|
|
Define PGDOC to use POSTGRESDIR by default
|
|
Make regression optional
|
|
Remove extra braces code to pgindent(Bruce)
|
|
Add bsdi shared library support(Bruce)
|
|
New --without-CXX support configure option(Brook)
|
|
New FAQ_CVS
|
|
Update backend flowchart in tools/backend(Bruce)
|
|
Change atttypmod from int16 to int32(Bruce, Tom)
|
|
Getrusage() fix for platforms that do not have it(Tom)
|
|
Add PQconnectdb, PGUSER, PGPASSWORD to libpq man page
|
|
NS32K platform fixes(Phil Nelson, John Buller)
|
|
Sco 7/UnixWare 2.x fixes(Billy,others)
|
|
Sparc/Solaris 2.5 fixes(Ryan)
|
|
Pgbuiltin.3 is obsolete, move to doc files(Thomas)
|
|
Even more documention(Thomas)
|
|
Nextstep support(Jacek)
|
|
Aix support(David)
|
|
pginterface manual page(Bruce)
|
|
shared libraries all have version numbers
|
|
merged all OS-specific shared library defines into one file
|
|
smarter TCL/TK configuration checking(Billy)
|
|
smarter perl configuration(Brook)
|
|
configure uses supplied install-sh if no install script found(Tom)
|
|
new Makefile.shlib for shared library configuration(Tom)
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Release 6.3.2
|
|
|
|
Release date: 1998-04-07
|
|
|
|
This is a bug-fix release for 6.3.x. Refer to the release notes for
|
|
version 6.3 for a more complete summary of new features.
|
|
|
|
Summary:
|
|
|
|
* Repairs automatic configuration support for some platforms, including
|
|
Linux, from breakage inadvertently introduced in version 6.3.1.
|
|
|
|
* Correctly handles function calls on the left side of BETWEEN and LIKE
|
|
clauses.
|
|
|
|
A dump/restore is NOT required for those running 6.3 or 6.3.1. A make
|
|
distclean, make, and make install is all that is required. This last step
|
|
should be performed while the postmaster is not running. You should
|
|
re-link any custom applications that use PostgreSQL libraries.
|
|
|
|
For upgrades from pre-6.3 installations, refer to the installation and
|
|
migration instructions for version 6.3.
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Changes
|
|
|
|
Configure detection improvements for tcl/tk(Brook Milligan, Alvin)
|
|
Manual page improvements(Bruce)
|
|
BETWEEN and LIKE fix(Thomas)
|
|
fix for psql \connect used by pg_dump(Oliver Elphick)
|
|
New odbc driver
|
|
pgaccess, version 0.86
|
|
qsort removed, now uses libc version, cleanups(Jeroen)
|
|
fix for buffer over-runs detected(Maurice Gittens)
|
|
fix for buffer overrun in libpgtcl(Randy Kunkee)
|
|
fix for UNION with DISTINCT or ORDER BY(Bruce)
|
|
gettimeofday configure check(Doug Winterburn)
|
|
Fix "indexes not used" bug(Vadim)
|
|
docs additions(Thomas)
|
|
Fix for backend memory leak(Bruce)
|
|
libreadline cleanup(Erwan MAS)
|
|
Remove DISTDIR(Bruce)
|
|
Makefile dependency cleanup(Jeroen van Vianen)
|
|
ASSERT fixes(Bruce)
|
|
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Release 6.3.1
|
|
|
|
Release date: 1998-03-23
|
|
|
|
Summary:
|
|
|
|
* Additional support for multibyte character sets.
|
|
|
|
* Repair byte ordering for mixed-endian clients and servers.
|
|
|
|
* Minor updates to allowed SQL syntax.
|
|
|
|
* Improvements to the configuration autodetection for installation.
|
|
|
|
A dump/restore is NOT required for those running 6.3. A make distclean,
|
|
make, and make install is all that is required. This last step should be
|
|
performed while the postmaster is not running. You should re-link any
|
|
custom applications that use PostgreSQL libraries.
|
|
|
|
For upgrades from pre-6.3 installations, refer to the installation and
|
|
migration instructions for version 6.3.
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Changes
|
|
|
|
ecpg cleanup/fixes, now version 1.1(Michael Meskes)
|
|
pg_user cleanup(Bruce)
|
|
large object fix for pg_dump and tclsh (alvin)
|
|
LIKE fix for multiple adjacent underscores
|
|
fix for redefining builtin functions(Thomas)
|
|
ultrix4 cleanup
|
|
upgrade to pg_access 0.83
|
|
updated CLUSTER manual page
|
|
multibyte character set support, see doc/README.mb(Tatsuo)
|
|
configure --with-pgport fix
|
|
pg_ident fix
|
|
big-endian fix for backend communications(Kataoka)
|
|
SUBSTR() and substring() fix(Jan)
|
|
several jdbc fixes(Peter)
|
|
libpgtcl improvements, see libptcl/README(Randy Kunkee)
|
|
Fix for "Datasize = 0" error(Vadim)
|
|
Prevent \do from wrapping(Bruce)
|
|
Remove duplicate Russian character set entries
|
|
Sunos4 cleanup
|
|
Allow optional TABLE keyword in LOCK and SELECT INTO(Thomas)
|
|
CREATE SEQUENCE options to allow a negative integer(Thomas)
|
|
Add "PASSWORD" as an allowed column identifier(Thomas)
|
|
Add checks for UNION target fields(Bruce)
|
|
Fix Alpha port(Dwayne Bailey)
|
|
Fix for text arrays containing quotes(Doug Gibson)
|
|
Solaris compile fix(Albert Chin-A-Young)
|
|
Better identify tcl and tk libs and includes(Bruce)
|
|
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Release 6.3
|
|
|
|
Release date: 1998-03-01
|
|
|
|
There are *many* new features and improvements in this release. Here is a
|
|
brief, incomplete summary:
|
|
|
|
* Many new SQL features, including full SQL92 subselect capability
|
|
(everything is here but target-list subselects).
|
|
|
|
* Support for client-side environment variables to specify time zone and
|
|
date style.
|
|
|
|
* Socket interface for client/server connection. This is the default now
|
|
so you may need to start postmaster with the "-i" flag.
|
|
|
|
* Better password authorization mechanisms. Default table permissions
|
|
have changed.
|
|
|
|
* Old-style time travel has been removed. Performance has been improved.
|
|
|
|
Note: Bruce Momjian wrote the following notes to introduce the new
|
|
release.
|
|
|
|
There are some general 6.3 issues that I want to mention. These are only
|
|
the big items that can not be described in one sentence. A review of the
|
|
detailed changes list is still needed.
|
|
|
|
First, we now have subselects. Now that we have them, I would like to
|
|
mention that without subselects, SQL is a very limited language.
|
|
Subselects are a major feature, and you should review your code for places
|
|
where subselects provide a better solution for your queries. I think you
|
|
will find that there are more uses for subselects than you may think.
|
|
Vadim has put us on the big SQL map with subselects, and fully functional
|
|
ones too. The only thing you can't do with subselects is to use them in
|
|
the target list.
|
|
|
|
Second, 6.3 uses Unix domain sockets rather than TCP/IP by default. To
|
|
enable connections from other machines, you have to use the new postmaster
|
|
-i option, and of course edit "pg_hba.conf". Also, for this reason, the
|
|
format of "pg_hba.conf" has changed.
|
|
|
|
Third, char() fields will now allow faster access than varchar() or text.
|
|
Specifically, the text and varchar() have a penalty for access to any
|
|
columns after the first column of this type. char() used to also have this
|
|
access penalty, but it no longer does. This may suggest that you redesign
|
|
some of your tables, especially if you have short character columns that
|
|
you have defined as varchar() or text. This and other changes make 6.3
|
|
even faster than earlier releases.
|
|
|
|
We now have passwords definable independent of any Unix file. There are
|
|
new SQL USER commands. See the Administrator's Guide for more information.
|
|
There is a new table, pg_shadow, which is used to store user information
|
|
and user passwords, and it by default only SELECT-able by the postgres
|
|
super-user. pg_user is now a view of pg_shadow, and is SELECT-able by
|
|
PUBLIC. You should keep using pg_user in your application without changes.
|
|
|
|
User-created tables now no longer have SELECT permission to PUBLIC by
|
|
default. This was done because the ANSI standard requires it. You can of
|
|
course GRANT any permissions you want after the table is created. System
|
|
tables continue to be SELECT-able by PUBLIC.
|
|
|
|
We also have real deadlock detection code. No more sixty-second timeouts.
|
|
And the new locking code implements a FIFO better, so there should be less
|
|
resource starvation during heavy use.
|
|
|
|
Many complaints have been made about inadequate documentation in previous
|
|
releases. Thomas has put much effort into many new manuals for this
|
|
release. Check out the doc/ directory.
|
|
|
|
For performance reasons, time travel is gone, but can be implemented using
|
|
triggers (see "pgsql/contrib/spi/README"). Please check out the new \d
|
|
command for types, operators, etc. Also, views have their own permissions
|
|
now, not based on the underlying tables, so permissions on them have to be
|
|
set separately. Check "/pgsql/interfaces" for some new ways to talk to
|
|
PostgreSQL.
|
|
|
|
This is the first release that really required an explanation for existing
|
|
users. In many ways, this was necessary because the new release removes
|
|
many limitations, and the work-arounds people were using are no longer
|
|
needed.
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Migration to version 6.3
|
|
|
|
A dump/restore using pg_dump or pg_dumpall is required for those wishing
|
|
to migrate data from any previous release of PostgreSQL.
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Changes
|
|
|
|
Bug Fixes
|
|
---------
|
|
Fix binary cursors broken by MOVE implementation(Vadim)
|
|
Fix for tcl library crash(Jan)
|
|
Fix for array handling, from Gerhard Hintermayer
|
|
Fix acl error, and remove duplicate pqtrace(Bruce)
|
|
Fix psql \e for empty file(Bruce)
|
|
Fix for textcat on varchar() fields(Bruce)
|
|
Fix for DBT Sendproc (Zeugswetter Andres)
|
|
Fix vacuum analyze syntax problem(Bruce)
|
|
Fix for international identifiers(Tatsuo)
|
|
Fix aggregates on inherited tables(Bruce)
|
|
Fix substr() for out-of-bounds data
|
|
Fix for select 1=1 or 2=2, select 1=1 and 2=2, and select sum(2+2)(Bruce)
|
|
Fix notty output to show status result. -q option still turns it off(Bruce)
|
|
Fix for count(*), aggs with views and multiple tables and sum(3)(Bruce)
|
|
Fix cluster(Bruce)
|
|
Fix for PQtrace start/stop several times(Bruce)
|
|
Fix a variety of locking problems like newer lock waiters getting
|
|
lock before older waiters, and having readlock people not share
|
|
locks if a writer is waiting for a lock, and waiting writers not
|
|
getting priority over waiting readers(Bruce)
|
|
Fix crashes in psql when executing queries from external files(James)
|
|
Fix problem with multiple order by columns, with the first one having
|
|
NULL values(Jeroen)
|
|
Use correct hash table support functions for float8 and int4(Thomas)
|
|
Re-enable JOIN= option in CREATE OPERATOR statement (Thomas)
|
|
Change precedence for boolean operators to match expected behavior(Thomas)
|
|
Generate elog(ERROR) on over-large integer(Bruce)
|
|
Allow multiple-argument functions in constraint clauses(Thomas)
|
|
Check boolean input literals for 'true','false','yes','no','1','0'
|
|
and throw elog(ERROR) if unrecognized(Thomas)
|
|
Major large objects fix
|
|
Fix for GROUP BY showing duplicates(Vadim)
|
|
Fix for index scans in MergeJion(Vadim)
|
|
|
|
Enhancements
|
|
------------
|
|
Subselects with EXISTS, IN, ALL, ANY keywords (Vadim, Bruce, Thomas)
|
|
New User Manual(Thomas, others)
|
|
Speedup by inlining some frequently-called functions
|
|
Real deadlock detection, no more timeouts(Bruce)
|
|
Add SQL92 "constants" CURRENT_DATE, CURRENT_TIME, CURRENT_TIMESTAMP,
|
|
CURRENT_USER(Thomas)
|
|
Modify constraint syntax to be SQL92-compliant(Thomas)
|
|
Implement SQL92 PRIMARY KEY and UNIQUE clauses using indexes(Thomas)
|
|
Recognize SQL92 syntax for FOREIGN KEY. Throw elog notice(Thomas)
|
|
Allow NOT NULL UNIQUE constraint clause (each allowed separately before)(Thomas)
|
|
Allow PostgreSQL-style casting ("::") of non-constants(Thomas)
|
|
Add support for SQL3 TRUE and FALSE boolean constants(Thomas)
|
|
Support SQL92 syntax for IS TRUE/IS FALSE/IS NOT TRUE/IS NOT FALSE(Thomas)
|
|
Allow shorter strings for boolean literals (e.g. "t", "tr", "tru")(Thomas)
|
|
Allow SQL92 delimited identifiers(Thomas)
|
|
Implement SQL92 binary and hexadecimal string decoding (b'10' and x'1F')(Thomas)
|
|
Support SQL92 syntax for type coercion of literal strings
|
|
(e.g. "DATETIME 'now'")(Thomas)
|
|
Add conversions for int2, int4, and OID types to and from text(Thomas)
|
|
Use shared lock when building indexes(Vadim)
|
|
Free memory allocated for an user query inside transaction block after
|
|
this query is done, was turned off in <= 6.2.1(Vadim)
|
|
New SQL statement CREATE PROCEDURAL LANGUAGE(Jan)
|
|
New PostgreSQL Procedural Language (PL) backend interface(Jan)
|
|
Rename pg_dump -H option to -h(Bruce)
|
|
Add Java support for passwords, European dates(Peter)
|
|
Use indexes for LIKE and ~, !~ operations(Bruce)
|
|
Add hash functions for datetime and timespan(Thomas)
|
|
Time Travel removed(Vadim, Bruce)
|
|
Add paging for \d and \z, and fix \i(Bruce)
|
|
Add Unix domain socket support to backend and to frontend library(Goran)
|
|
Implement CREATE DATABASE/WITH LOCATION and initlocation utility(Thomas)
|
|
Allow more SQL92 and/or PostgreSQL reserved words as column identifiers(Thomas)
|
|
Augment support for SQL92 SET TIME ZONE...(Thomas)
|
|
SET/SHOW/RESET TIME ZONE uses TZ backend environment variable(Thomas)
|
|
Implement SET keyword = DEFAULT and SET TIME ZONE DEFAULT(Thomas)
|
|
Enable SET TIME ZONE using TZ environment variable(Thomas)
|
|
Add PGDATESTYLE environment variable to frontend and backend initialization(Thomas)
|
|
Add PGTZ, PGCOSTHEAP, PGCOSTINDEX, PGRPLANS, PGGEQO
|
|
frontend library initialization environment variables(Thomas)
|
|
Regression tests time zone automatically set with "setenv PGTZ PST8PDT"(Thomas)
|
|
Add pg_description table for info on tables, columns, operators, types, and
|
|
aggregates(Bruce)
|
|
Increase 16 char limit on system table/index names to 32 characters(Bruce)
|
|
Rename system indexes(Bruce)
|
|
Add 'GERMAN' option to SET DATESTYLE(Thomas)
|
|
Define an "ISO-style" timespan output format with "hh:mm:ss" fields(Thomas)
|
|
Allow fractional values for delta times (e.g. '2.5 days')(Thomas)
|
|
Validate numeric input more carefully for delta times(Thomas)
|
|
Implement day of year as possible input to date_part()(Thomas)
|
|
Define timespan_finite() and text_timespan() functions(Thomas)
|
|
Remove archive stuff(Bruce)
|
|
Allow for a pg_password authentication database that is separate from
|
|
the system password file(Todd)
|
|
Dump ACLs, GRANT, REVOKE permissions(Matt)
|
|
Define text, varchar, and bpchar string length functions(Thomas)
|
|
Fix Query handling for inheritance, and cost computations(Bruce)
|
|
Implement CREATE TABLE/AS SELECT (alternative to SELECT/INTO)(Thomas)
|
|
Allow NOT, IS NULL, IS NOT NULL in constraints(Thomas)
|
|
Implement UNIONs for SELECT(Bruce)
|
|
Add UNION, GROUP, DISTINCT to INSERT(Bruce)
|
|
varchar() stores only necessary bytes on disk(Bruce)
|
|
Fix for BLOBs(Peter)
|
|
Mega-Patch for JDBC...see README_6.3 for list of changes(Peter)
|
|
Remove unused "option" from PQconnectdb()
|
|
New LOCK command and lock manual page describing deadlocks(Bruce)
|
|
Add new psql \da, \dd, \df, \do, \dS, and \dT commands(Bruce)
|
|
Enhance psql \z to show sequences(Bruce)
|
|
Show NOT NULL and DEFAULT in psql \d table(Bruce)
|
|
New psql .psqlrc file start-up(Andrew)
|
|
Modify sample start-up script in contrib/linux to show syslog(Thomas)
|
|
New types for IP and MAC addresses in contrib/ip_and_mac(TomH)
|
|
Unix system time conversions with date/time types in contrib/unixdate(Thomas)
|
|
Update of contrib stuff(Massimo)
|
|
Add Unix socket support to DBD::Pg(Goran)
|
|
New python interface (PyGreSQL 2.0)(D'Arcy)
|
|
New frontend/backend protocol has a version number, network byte order(Phil)
|
|
Security features in pg_hba.conf enhanced and documented, many cleanups(Phil)
|
|
CHAR() now faster access than VARCHAR() or TEXT
|
|
ecpg embedded SQL preprocessor
|
|
Reduce system column overhead(Vadmin)
|
|
Remove pg_time table(Vadim)
|
|
Add pg_type attribute to identify types that need length (bpchar, varchar)
|
|
Add report of offending line when COPY command fails
|
|
Allow VIEW permissions to be set separately from the underlying tables.
|
|
For security, use GRANT/REVOKE on views as appropriate(Jan)
|
|
Tables now have no default GRANT SELECT TO PUBLIC. You must
|
|
explicitly grant such permissions.
|
|
Clean up tutorial examples(Darren)
|
|
|
|
Source Tree Changes
|
|
-------------------
|
|
Add new html development tools, and flow chart in /tools/backend
|
|
Fix for SCO compiles
|
|
Stratus computer port Robert Gillies
|
|
Added support for shlib for BSD44_derived & i386_solaris
|
|
Make configure more automated(Brook)
|
|
Add script to check regression test results
|
|
Break parser functions into smaller files, group together(Bruce)
|
|
Rename heap_create to heap_create_and_catalog, rename heap_creatr
|
|
to heap_create()(Bruce)
|
|
Sparc/Linux patch for locking(TomS)
|
|
Remove PORTNAME and reorganize port-specific stuff(Marc)
|
|
Add optimizer README file(Bruce)
|
|
Remove some recursion in optimizer and clean up some code there(Bruce)
|
|
Fix for NetBSD locking(Henry)
|
|
Fix for libptcl make(Tatsuo)
|
|
AIX patch(Darren)
|
|
Change IS TRUE, IS FALSE, ... to expressions using "=" rather than
|
|
function calls to istrue() or isfalse() to allow optimization(Thomas)
|
|
Various fixes NetBSD/Sparc related(TomH)
|
|
Alpha linux locking(Travis,Ryan)
|
|
Change elog(WARN) to elog(ERROR)(Bruce)
|
|
FAQ for FreeBSD(Marc)
|
|
Bring in the PostODBC source tree as part of our standard distribution(Marc)
|
|
A minor patch for HP/UX 10 vs 9(Stan)
|
|
New pg_attribute.atttypmod for type-specific info like varchar length(Bruce)
|
|
Unixware patches(Billy)
|
|
New i386 'lock' for spin lock asm(Billy)
|
|
Support for multiplexed backends is removed
|
|
Start an OpenBSD port
|
|
Start an AUX port
|
|
Start a Cygnus port
|
|
Add string functions to regression suite(Thomas)
|
|
Expand a few function names formerly truncated to 16 characters(Thomas)
|
|
Remove un-needed malloc() calls and replace with palloc()(Bruce)
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Release 6.2.1
|
|
|
|
Release date: 1997-10-17
|
|
|
|
6.2.1 is a bug-fix and usability release on 6.2.
|
|
|
|
Summary:
|
|
|
|
* Allow strings to span lines, per SQL92.
|
|
|
|
* Include example trigger function for inserting user names on table
|
|
updates.
|
|
|
|
This is a minor bug-fix release on 6.2. For upgrades from pre-6.2 systems,
|
|
a full dump/reload is required. Refer to the 6.2 release notes for
|
|
instructions.
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Migration from version 6.2 to version 6.2.1
|
|
|
|
This is a minor bug-fix release. A dump/reload is not required from
|
|
version 6.2, but is required from any release prior to 6.2.
|
|
|
|
In upgrading from version 6.2, if you choose to dump/reload you will find
|
|
that avg(money) is now calculated correctly. All other bug fixes take
|
|
effect upon updating the executables.
|
|
|
|
Another way to avoid dump/reload is to use the following SQL command from
|
|
"psql" to update the existing system table:
|
|
|
|
update pg_aggregate set aggfinalfn = 'cash_div_flt8'
|
|
where aggname = 'avg' and aggbasetype = 790;
|
|
|
|
This will need to be done to every existing database, including template1.
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Changes
|
|
|
|
Allow TIME and TYPE column names(Thomas)
|
|
Allow larger range of true/false as boolean values(Thomas)
|
|
Support output of "now" and "current"(Thomas)
|
|
Handle DEFAULT with INSERT of NULL properly(Vadim)
|
|
Fix for relation reference counts problem in buffer manager(Vadim)
|
|
Allow strings to span lines, like ANSI(Thomas)
|
|
Fix for backward cursor with ORDER BY(Vadim)
|
|
Fix avg(cash) computation(Thomas)
|
|
Fix for specifying a column twice in ORDER/GROUP BY(Vadim)
|
|
Documented new libpq function to return affected rows, PQcmdTuples(Bruce)
|
|
Trigger function for inserting user names for INSERT/UPDATE(Brook Milligan)
|
|
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Release 6.2
|
|
|
|
Release date: 1997-10-02
|
|
|
|
A dump/restore is required for those wishing to migrate data from previous
|
|
releases of PostgreSQL.
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Migration from version 6.1 to version 6.2
|
|
|
|
This migration requires a complete dump of the 6.1 database and a restore
|
|
of the database in 6.2.
|
|
|
|
Note that the "pg_dump" and "pg_dumpall" utility from 6.2 should be used
|
|
to dump the 6.1 database.
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Migration from version 1.x to version 6.2
|
|
|
|
Those migrating from earlier 1.* releases should first upgrade to 1.09
|
|
because the COPY output format was improved from the 1.02 release.
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Changes
|
|
|
|
Bug Fixes
|
|
---------
|
|
Fix problems with pg_dump for inheritance, sequences, archive tables(Bruce)
|
|
Fix compile errors on overflow due to shifts, unsigned, and bad prototypes
|
|
from Solaris(Diab Jerius)
|
|
Fix bugs in geometric line arithmetic (bad intersection calculations)(Thomas)
|
|
Check for geometric intersections at endpoints to avoid rounding ugliness(Thomas)
|
|
Catch non-functional delete attempts(Vadim)
|
|
Change time function names to be more consistent(Michael Reifenberg)
|
|
Check for zero divides(Michael Reifenberg)
|
|
Fix very old bug which made tuples changed/inserted by a commnd
|
|
visible to the command itself (so we had multiple update of
|
|
updated tuples, etc)(Vadim)
|
|
Fix for SELECT null, 'fail' FROM pg_am (Patrick)
|
|
SELECT NULL as EMPTY_FIELD now allowed(Patrick)
|
|
Remove un-needed signal stuff from contrib/pginterface
|
|
Fix OR (where x != 1 or x isnull didn't return tuples with x NULL) (Vadim)
|
|
Fix time_cmp function (Vadim)
|
|
Fix handling of functions with non-attribute first argument in
|
|
WHERE clauses (Vadim)
|
|
Fix GROUP BY when order of entries is different from order
|
|
in target list (Vadim)
|
|
Fix pg_dump for aggregates without sfunc1 (Vadim)
|
|
|
|
Enhancements
|
|
------------
|
|
Default genetic optimizer GEQO parameter is now 8(Bruce)
|
|
Allow use parameters in target list having aggregates in functions(Vadim)
|
|
Added JDBC driver as an interface(Adrian & Peter)
|
|
pg_password utility
|
|
Return number of tuples inserted/affected by INSERT/UPDATE/DELETE etc.(Vadim)
|
|
Triggers implemented with CREATE TRIGGER (SQL3)(Vadim)
|
|
SPI (Server Programming Interface) allows execution of queries inside
|
|
C-functions (Vadim)
|
|
NOT NULL implemented (SQL92)(Robson Paniago de Miranda)
|
|
Include reserved words for string handling, outer joins, and unions(Thomas)
|
|
Implement extended comments ("/* ... */") using exclusive states(Thomas)
|
|
Add "//" single-line comments(Bruce)
|
|
Remove some restrictions on characters in operator names(Thomas)
|
|
DEFAULT and CONSTRAINT for tables implemented (SQL92)(Vadim & Thomas)
|
|
Add text concatenation operator and function (SQL92)(Thomas)
|
|
Support WITH TIME ZONE syntax (SQL92)(Thomas)
|
|
Support INTERVAL unit TO unit syntax (SQL92)(Thomas)
|
|
Define types DOUBLE PRECISION, INTERVAL, CHARACTER,
|
|
and CHARACTER VARYING (SQL92)(Thomas)
|
|
Define type FLOAT(p) and rudimentary DECIMAL(p,s), NUMERIC(p,s) (SQL92)(Thomas)
|
|
Define EXTRACT(), POSITION(), SUBSTRING(), and TRIM() (SQL92)(Thomas)
|
|
Define CURRENT_DATE, CURRENT_TIME, CURRENT_TIMESTAMP (SQL92)(Thomas)
|
|
Add syntax and warnings for UNION, HAVING, INNER and OUTER JOIN (SQL92)(Thomas)
|
|
Add more reserved words, mostly for SQL92 compliance(Thomas)
|
|
Allow hh:mm:ss time entry for timespan/reltime types(Thomas)
|
|
Add center() routines for lseg, path, polygon(Thomas)
|
|
Add distance() routines for circle-polygon, polygon-polygon(Thomas)
|
|
Check explicitly for points and polygons contained within polygons
|
|
using an axis-crossing algorithm(Thomas)
|
|
Add routine to convert circle-box(Thomas)
|
|
Merge conflicting operators for different geometric data types(Thomas)
|
|
Replace distance operator "<===>" with "<->"(Thomas)
|
|
Replace "above" operator "!^" with ">^" and "below" operator "!|" with "<^"(Thomas)
|
|
Add routines for text trimming on both ends, substring, and string position(Thomas)
|
|
Added conversion routines circle(box) and poly(circle)(Thomas)
|
|
Allow internal sorts to be stored in memory rather than in files(Bruce & Vadim)
|
|
Allow functions and operators on internally-identical types to succeed(Bruce)
|
|
Speed up backend start-up after profiling analysis(Bruce)
|
|
Inline frequently called functions for performance(Bruce)
|
|
Reduce open() calls(Bruce)
|
|
psql: Add PAGER for \h and \?,\C fix
|
|
Fix for psql pager when no tty(Bruce)
|
|
New entab utility(Bruce)
|
|
General trigger functions for referential integrity (Vadim)
|
|
General trigger functions for time travel (Vadim)
|
|
General trigger functions for AUTOINCREMENT/IDENTITY feature (Vadim)
|
|
MOVE implementation (Vadim)
|
|
|
|
Source Tree Changes
|
|
-------------------
|
|
HPUX 10 patches (Vladimir Turin)
|
|
Added SCO support, (Daniel Harris)
|
|
mkLinux patches (Tatsuo Ishii)
|
|
Change geometric box terminology from "length" to "width"(Thomas)
|
|
Deprecate temporary unstored slope fields in geometric code(Thomas)
|
|
Remove restart instructions from INSTALL(Bruce)
|
|
Look in /usr/ucb first for install(Bruce)
|
|
Fix c++ copy example code(Thomas)
|
|
Add -o to psql manual page(Bruce)
|
|
Prevent relname unallocated string length from being copied into database(Bruce)
|
|
Cleanup for NAMEDATALEN use(Bruce)
|
|
Fix pg_proc names over 15 chars in output(Bruce)
|
|
Add strNcpy() function(Bruce)
|
|
remove some (void) casts that are unnecessary(Bruce)
|
|
new interfaces directory(Marc)
|
|
Replace fopen() calls with calls to fd.c functions(Bruce)
|
|
Make functions static where possible(Bruce)
|
|
enclose unused functions in #ifdef NOT_USED(Bruce)
|
|
Remove call to difftime() in timestamp support to fix SunOS(Bruce & Thomas)
|
|
Changes for Digital Unix
|
|
Portability fix for pg_dumpall(Bruce)
|
|
Rename pg_attribute.attnvals to attdispersion(Bruce)
|
|
"intro/unix" manual page now "pgintro"(Bruce)
|
|
"built-in" manual page now "pgbuiltin"(Bruce)
|
|
"drop" manual page now "drop_table"(Bruce)
|
|
Add "create_trigger", "drop_trigger" manual pages(Thomas)
|
|
Add constraints regression test(Vadim & Thomas)
|
|
Add comments syntax regression test(Thomas)
|
|
Add PGINDENT and support program(Bruce)
|
|
Massive commit to run PGINDENT on all *.c and *.h files(Bruce)
|
|
Files moved to /src/tools directory(Bruce)
|
|
SPI and Trigger programming guides (Vadim & D'Arcy)
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Release 6.1.1
|
|
|
|
Release date: 1997-07-22
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Migration from version 6.1 to version 6.1.1
|
|
|
|
This is a minor bug-fix release. A dump/reload is not required from
|
|
version 6.1, but is required from any release prior to 6.1. Refer to the
|
|
release notes for 6.1 for more details.
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Changes
|
|
|
|
fix for SET with options (Thomas)
|
|
allow pg_dump/pg_dumpall to preserve ownership of all tables/objects(Bruce)
|
|
new psql \connect option allows changing usernames without changing databases
|
|
fix for initdb --debug option(Yoshihiko Ichikawa))
|
|
lextest cleanup(Bruce)
|
|
hash fixes(Vadim)
|
|
fix date/time month boundary arithmetic(Thomas)
|
|
fix timezone daylight handling for some ports(Thomas, Bruce, Tatsuo)
|
|
timestamp overhauled to use standard functions(Thomas)
|
|
other code cleanup in date/time routines(Thomas)
|
|
psql's \d now case-insensitive(Bruce)
|
|
psql's backslash commands can now have trailing semicolon(Bruce)
|
|
fix memory leak in psql when using \g(Bruce)
|
|
major fix for endian handling of communication to server(Thomas, Tatsuo)
|
|
Fix for Solaris assembler and include files(Yoshihiko Ichikawa)
|
|
allow underscores in usernames(Bruce)
|
|
pg_dumpall now returns proper status, portability fix(Bruce)
|
|
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Release 6.1
|
|
|
|
Release date: 1997-06-08
|
|
|
|
The regression tests have been adapted and extensively modified for the
|
|
6.1 release of PostgreSQL.
|
|
|
|
Three new data types (datetime, timespan, and circle) have been added to
|
|
the native set of PostgreSQL types. Points, boxes, paths, and polygons
|
|
have had their output formats made consistent across the data types. The
|
|
polygon output in misc.out has only been spot-checked for correctness
|
|
relative to the original regression output.
|
|
|
|
PostgreSQL 6.1 introduces a new, alternate optimizer which uses genetic
|
|
algorithms. These algorithms introduce a random behavior in the ordering
|
|
of query results when the query contains multiple qualifiers or multiple
|
|
tables (giving the optimizer a choice on order of evaluation). Several
|
|
regression tests have been modified to explicitly order the results, and
|
|
hence are insensitive to optimizer choices. A few regression tests are for
|
|
data types which are inherently unordered (e.g. points and time intervals)
|
|
and tests involving those types are explicitly bracketed with "set geqo to
|
|
'off'" and "reset geqo".
|
|
|
|
The interpretation of array specifiers (the curly braces around atomic
|
|
values) appears to have changed sometime after the original regression
|
|
tests were generated. The current "./expected/*.out" files reflect this
|
|
new interpretation, which may not be correct!
|
|
|
|
The float8 regression test fails on at least some platforms. This is due
|
|
to differences in implementations of pow() and exp() and the signaling
|
|
mechanisms used for overflow and underflow conditions.
|
|
|
|
The "random" results in the random test should cause the "random" test to
|
|
be "failed", since the regression tests are evaluated using a simple diff.
|
|
However, "random" does not seem to produce random results on my test
|
|
machine (Linux/gcc/i686).
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Migration to version 6.1
|
|
|
|
This migration requires a complete dump of the 6.0 database and a restore
|
|
of the database in 6.1.
|
|
|
|
Those migrating from earlier 1.* releases should first upgrade to 1.09
|
|
because the COPY output format was improved from the 1.02 release.
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Changes
|
|
|
|
Bug Fixes
|
|
---------
|
|
packet length checking in library routines
|
|
lock manager priority patch
|
|
check for under/over flow of float8(Bruce)
|
|
multi-table join fix(Vadim)
|
|
SIGPIPE crash fix(Darren)
|
|
large object fixes(Sven)
|
|
allow btree indexes to handle NULLs(Vadim)
|
|
timezone fixes(D'Arcy)
|
|
select SUM(x) can return NULL on no rows(Thomas)
|
|
internal optimizer, executor bug fixes(Vadim)
|
|
fix problem where inner loop in < or <= has no rows(Vadim)
|
|
prevent re-commuting join index clauses(Vadim)
|
|
fix join clauses for multiple tables(Vadim)
|
|
fix hash, hashjoin for arrays(Vadim)
|
|
fix btree for abstime type(Vadim)
|
|
large object fixes(Raymond)
|
|
fix buffer leak in hash indexes (Vadim)
|
|
fix rtree for use in inner scan (Vadim)
|
|
fix gist for use in inner scan, cleanups (Vadim, Andrea)
|
|
avoid unnecessary local buffers allocation (Vadim, Massimo)
|
|
fix local buffers leak in transaction aborts (Vadim)
|
|
fix file manager memmory leaks, cleanups (Vadim, Massimo)
|
|
fix storage manager memmory leaks (Vadim)
|
|
fix btree duplicates handling (Vadim)
|
|
fix deleted tuples re-incarnation caused by vacuum (Vadim)
|
|
fix SELECT varchar()/char() INTO TABLE made zero-length fields(Bruce)
|
|
many psql, pg_dump, and libpq memory leaks fixed using Purify (Igor)
|
|
|
|
Enhancements
|
|
------------
|
|
attribute optimization statistics(Bruce)
|
|
much faster new btree bulk load code(Paul)
|
|
BTREE UNIQUE added to bulk load code(Vadim)
|
|
new lock debug code(Massimo)
|
|
massive changes to libpg++(Leo)
|
|
new GEQO optimizer speeds table multi-table optimization(Martin)
|
|
new WARN message for non-unique insert into unique key(Marc)
|
|
update x=-3, no spaces, now valid(Bruce)
|
|
remove case-sensitive identifier handling(Bruce,Thomas,Dan)
|
|
debug backend now pretty-prints tree(Darren)
|
|
new Oracle character functions(Edmund)
|
|
new plaintext password functions(Dan)
|
|
no such class or insufficient privilege changed to distinct messages(Dan)
|
|
new ANSI timestamp function(Dan)
|
|
new ANSI Time and Date types (Thomas)
|
|
move large chunks of data in backend(Martin)
|
|
multi-column btree indexes(Vadim)
|
|
new SET var TO value command(Martin)
|
|
update transaction status on reads(Dan)
|
|
new locale settings for character types(Oleg)
|
|
new SEQUENCE serial number generator(Vadim)
|
|
GROUP BY function now possible(Vadim)
|
|
re-organize regression test(Thomas,Marc)
|
|
new optimizer operation weights(Vadim)
|
|
new psql \z grant/permit option(Marc)
|
|
new MONEY data type(D'Arcy,Thomas)
|
|
tcp socket communication speed improved(Vadim)
|
|
new VACUUM option for attribute statistics, and for certain columns (Vadim)
|
|
many geometric type improvements(Thomas,Keith)
|
|
additional regression tests(Thomas)
|
|
new datestyle variable(Thomas,Vadim,Martin)
|
|
more comparison operators for sorting types(Thomas)
|
|
new conversion functions(Thomas)
|
|
new more compact btree format(Vadim)
|
|
allow pg_dumpall to preserve database ownership(Bruce)
|
|
new SET GEQO=# and R_PLANS variable(Vadim)
|
|
old (!GEQO) optimizer can use right-sided plans (Vadim)
|
|
typechecking improvement in SQL parser(Bruce)
|
|
new SET, SHOW, RESET commands(Thomas,Vadim)
|
|
new \connect database USER option
|
|
new destroydb -i option (Igor)
|
|
new \dt and \di psql commands (Darren)
|
|
SELECT "\n" now escapes newline (A. Duursma)
|
|
new geometry conversion functions from old format (Thomas)
|
|
|
|
Source tree changes
|
|
-------------------
|
|
new configuration script(Marc)
|
|
readline configuration option added(Marc)
|
|
OS-specific configuration options removed(Marc)
|
|
new OS-specific template files(Marc)
|
|
no more need to edit Makefile.global(Marc)
|
|
re-arrange include files(Marc)
|
|
nextstep patches (Gregor Hoffleit)
|
|
removed WIN32-specific code(Bruce)
|
|
removed postmaster -e option, now only postgres -e option (Bruce)
|
|
merge duplicate library code in front/backends(Martin)
|
|
now works with eBones, international Kerberos(Jun)
|
|
more shared library support
|
|
c++ include file cleanup(Bruce)
|
|
warn about buggy flex(Bruce)
|
|
DG-UX, Ultrix, Irix, AIX portability fixes
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Release 6.0
|
|
|
|
Release date: 1997-01-29
|
|
|
|
A dump/restore is required for those wishing to migrate data from previous
|
|
releases of PostgreSQL.
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Migration from version 1.09 to version 6.0
|
|
|
|
This migration requires a complete dump of the 1.09 database and a restore
|
|
of the database in 6.0.
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Migration from pre-1.09 to version 6.0
|
|
|
|
Those migrating from earlier 1.* releases should first upgrade to 1.09
|
|
because the COPY output format was improved from the 1.02 release.
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Changes
|
|
|
|
Bug Fixes
|
|
---------
|
|
ALTER TABLE bug - running postgress process needs to re-read table definition
|
|
Allow vacuum to be run on one table or entire database(Bruce)
|
|
Array fixes
|
|
Fix array over-runs of memory writes(Kurt)
|
|
Fix elusive btree range/non-range bug(Dan)
|
|
Fix for hash indexes on some types like time and date
|
|
Fix for pg_log size explosion
|
|
Fix permissions on lo_export()(Bruce)
|
|
Fix unitialized reads of memory(Kurt)
|
|
Fixed ALTER TABLE ... char(3) bug(Bruce)
|
|
Fixed a few small memory leaks
|
|
Fixed EXPLAIN handling of options and changed full_path option name
|
|
Fixed output of group acl permissions
|
|
Memory leaks (hunt and destroy with tools like Purify(Kurt)
|
|
Minor improvements to rules system
|
|
NOTIFY fixes
|
|
New asserts for run-checking
|
|
Overhauled parser/analyze code to properly report errors and increase speed
|
|
Pg_dump -d now handles NULL's properly(Bruce)
|
|
Prevent SELECT NULL from crashing server (Bruce)
|
|
Properly report errors when INSERT ... SELECT columns did not match
|
|
Properly report errors when insert column names were not correct
|
|
Psql \g filename now works(Bruce)
|
|
Psql fixed problem with multiple statements on one line with multiple outputs
|
|
Removed duplicate system oid's
|
|
SELECT * INTO TABLE . GROUP/ORDER BY gives unlink error if table exists(Bruce)
|
|
Several fixes for queries that crashed the backend
|
|
Starting quote in insert string errors(Bruce)
|
|
Submitting an empty query now returns empty status, not just " " query(Bruce)
|
|
|
|
Enhancements
|
|
------------
|
|
Add EXPLAIN manual page(Bruce)
|
|
Add UNIQUE index capability(Dan)
|
|
Add hostname/user level access control rather than just hostname and user
|
|
Add synonym of != for <>(Bruce)
|
|
Allow "select oid,* from table"
|
|
Allow BY,ORDER BY to specify columns by number, or by non-alias table.column(Bruce)
|
|
Allow COPY from the frontend(Bryan)
|
|
Allow GROUP BY to use alias column name(Bruce)
|
|
Allow actual compression, not just reuse on the same page(Vadim)
|
|
Allow installation-configuration option to auto-add all local users(Bryan)
|
|
Allow libpq to distinguish between text value '' and null(Bruce)
|
|
Allow non-postgres users with createdb privs to destroydb's
|
|
Allow restriction on who can create C functions(Bryan)
|
|
Allow restriction on who can do backend COPY(Bryan)
|
|
Can shrink tables, pg_time and pg_log(Vadim & Erich)
|
|
Change debug level 2 to print queries only, changed debug heading layout(Bruce)
|
|
Change default decimal constant representation from float4 to float8(Bruce)
|
|
European date format now set when postmaster is started
|
|
Execute lowercase function names if not found with exact case
|
|
Fixes for aggregate/GROUP processing, allow 'select sum(func(x),sum(x+y) from z'
|
|
Gist now included in the distrubution(Marc)
|
|
Idend authentication of local users(Bryan)
|
|
Implement BETWEEN qualifier(Bruce)
|
|
Implement IN qualifier(Bruce)
|
|
Libpq has PQgetisnull()(Bruce)
|
|
Libpq++ improvements
|
|
New options to initdb(Bryan)
|
|
Pg_dump allow dump of oid's(Bruce)
|
|
Pg_dump create indexes after tables are loaded for speed(Bruce)
|
|
Pg_dumpall dumps all databases, and the user table
|
|
Pginterface additions for NULL values(Bruce)
|
|
Prevent postmaster from being run as root
|
|
Psql \h and \? is now readable(Bruce)
|
|
Psql allow backslashed, semicolons anywhere on the line(Bruce)
|
|
Psql changed command prompt for lines in query or in quotes(Bruce)
|
|
Psql char(3) now displays as (bp)char in \d output(Bruce)
|
|
Psql return code now more accurate(Bryan?)
|
|
Psql updated help syntax(Bruce)
|
|
Re-visit and fix vacuum(Vadim)
|
|
Reduce size of regression diffs, remove timezone name difference(Bruce)
|
|
Remove compile-time parameters to enable binary distributions(Bryan)
|
|
Reverse meaning of HBA masks(Bryan)
|
|
Secure Authentication of local users(Bryan)
|
|
Speed up vacuum(Vadim)
|
|
Vacuum now had VERBOSE option(Bruce)
|
|
|
|
Source tree changes
|
|
-------------------
|
|
All functions now have prototypes that are compared against the calls
|
|
Allow asserts to be disabled easly from Makefile.global(Bruce)
|
|
Change oid constants used in code to #define names
|
|
Decoupled sparc and solaris defines(Kurt)
|
|
Gcc -Wall compiles cleanly with warnings only from unfixable constructs
|
|
Major include file reorganization/reduction(Marc)
|
|
Make now stops on compile failure(Bryan)
|
|
Makefile restructuring(Bryan, Marc)
|
|
Merge bsdi_2_1 to bsdi(Bruce)
|
|
Monitor program removed
|
|
Name change from Postgres95 to PostgreSQL
|
|
New config.h file(Marc, Bryan)
|
|
PG_VERSION now set to 6.0 and used by postmaster
|
|
Portability additions, including Ultrix, DG/UX, AIX, and Solaris
|
|
Reduced the number of #define's, centeralized #define's
|
|
Remove duplicate OIDS in system tables(Dan)
|
|
Remove duplicate system catalog info or report mismatches(Dan)
|
|
Removed many os-specific #define's
|
|
Restructured object file generation/location(Bryan, Marc)
|
|
Restructured port-specific file locations(Bryan, Marc)
|
|
Unused/uninialized variables corrected
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Release 1.09
|
|
|
|
Release date: 1996-11-04
|
|
|
|
Sorry, we didn't keep track of changes from 1.02 to 1.09. Some of the
|
|
changes listed in 6.0 were actually included in the 1.02.1 to 1.09
|
|
releases.
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Release 1.02
|
|
|
|
Release date: 1996-08-01
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Migration from version 1.02 to version 1.02.1
|
|
|
|
Here is a new migration file for 1.02.1. It includes the 'copy' change and
|
|
a script to convert old ASCII files.
|
|
|
|
Note: The following notes are for the benefit of users who want to
|
|
migrate databases from Postgres95 1.01 and 1.02 to Postgres95 1.02.1.
|
|
|
|
If you are starting afresh with Postgres95 1.02.1 and do not need to
|
|
migrate old databases, you do not need to read any further.
|
|
|
|
In order to upgrade older Postgres95 version 1.01 or 1.02 databases to
|
|
version 1.02.1, the following steps are required:
|
|
|
|
|
|
|
|
|
|
databases. This is done by running the new 1.02.1 server against your
|
|
own 1.01 or 1.02 database and applying the queries attached at the end
|
|
of the file. This can be done easily through "psql". If your 1.01 or
|
|
1.02 database is named testdb and you have cut the commands from the
|
|
end of this file and saved them in "addfunc.sql":
|
|
|
|
% psql testdb -f addfunc.sql
|
|
|
|
Those upgrading 1.02 databases will get a warning when executing the
|
|
last two statements in the file because they are already present in
|
|
1.02. This is not a cause for concern.
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Dump/Reload Procedure
|
|
|
|
If you are trying to reload a pg_dump or text-mode, copy tablename to
|
|
stdout generated with a previous version, you will need to run the
|
|
attached "sed" script on the ASCII file before loading it into the
|
|
database. The old format used '.' as end-of-data, while '\.' is now the
|
|
end-of-data marker. Also, empty strings are now loaded in as '' rather
|
|
than NULL. See the copy manual page for full details.
|
|
|
|
sed 's/^\.$/\\./g' <in_file >out_file
|
|
|
|
If you are loading an older binary copy or non-stdout copy, there is no
|
|
end-of-data character, and hence no conversion necessary.
|
|
|
|
-- following lines added by agc to reflect the case-insensitive
|
|
-- regexp searching for varchar (in 1.02), and bpchar (in 1.02.1)
|
|
create operator ~* (leftarg = bpchar, rightarg = text, procedure = texticregexeq);
|
|
create operator !~* (leftarg = bpchar, rightarg = text, procedure = texticregexne);
|
|
create operator ~* (leftarg = varchar, rightarg = text, procedure = texticregexeq);
|
|
create operator !~* (leftarg = varchar, rightarg = text, procedure = texticregexne);
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Changes
|
|
|
|
Source code maintenance and development
|
|
* worldwide team of volunteers
|
|
* the source tree now in CVS at ftp.ki.net
|
|
|
|
Enhancements
|
|
* psql (and underlying libpq library) now has many more options for
|
|
formatting output, including HTML
|
|
* pg_dump now output the schema and/or the data, with many fixes to
|
|
enhance completeness.
|
|
* psql used in place of monitor in administration shell scripts.
|
|
monitor to be depreciated in next release.
|
|
* date/time functions enhanced
|
|
* NULL insert/update/comparison fixed/enhanced
|
|
* TCL/TK lib and shell fixed to work with both tck7.4/tk4.0 and tcl7.5/tk4.1
|
|
|
|
Bug Fixes (almost too numerous to mention)
|
|
* indexes
|
|
* storage management
|
|
* check for NULL pointer before dereferencing
|
|
* Makefile fixes
|
|
|
|
New Ports
|
|
* added SolarisX86 port
|
|
* added BSDI 2.1 port
|
|
* added DGUX port
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Release 1.01
|
|
|
|
Release date: 1996-02-23
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Migration from version 1.0 to version 1.01
|
|
|
|
The following notes are for the benefit of users who want to migrate
|
|
databases from Postgres95 1.0 to Postgres95 1.01.
|
|
|
|
If you are starting afresh with Postgres95 1.01 and do not need to migrate
|
|
old databases, you do not need to read any further.
|
|
|
|
In order to Postgres95 version 1.01 with databases created with Postgres95
|
|
version 1.0, the following steps are required:
|
|
|
|
|
|
OIDNAMELEN to 20.
|
|
|
|
|
|
|
|
|
|
data directory (typically the value of your $PGDATA).
|
|
"src/libpq/pg_hba" shows an example syntax.
|
|
|
|
|
|
the line
|
|
|
|
HBA = 1
|
|
|
|
in "src/Makefile.global"
|
|
|
|
Note that host-based authentication is turned on by default, and
|
|
if you do not take steps A or B above, the out-of-the-box 1.01
|
|
will not allow you to connect to 1.0 databases.
|
|
|
|
|
|
|
|
|
|
your existing $PGDATA directory.
|
|
|
|
|
|
path up so that 1.01 binaries are being used.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
This is done by running the new 1.01 server against your own 1.0
|
|
database and applying the queries attached and saving in the file
|
|
1.0_to_1.01.sql. This can be done easily through "psql". If your 1.0
|
|
database is name testdb:
|
|
|
|
% psql testdb -f 1.0_to_1.01.sql
|
|
|
|
and then execute the following commands (cut and paste from here):
|
|
|
|
-- add builtin functions that are new to 1.01
|
|
|
|
create function int4eqoid (int4, oid) returns bool as 'foo'
|
|
language 'internal';
|
|
create function oideqint4 (oid, int4) returns bool as 'foo'
|
|
language 'internal';
|
|
create function char2icregexeq (char2, text) returns bool as 'foo'
|
|
language 'internal';
|
|
create function char2icregexne (char2, text) returns bool as 'foo'
|
|
language 'internal';
|
|
create function char4icregexeq (char4, text) returns bool as 'foo'
|
|
language 'internal';
|
|
create function char4icregexne (char4, text) returns bool as 'foo'
|
|
language 'internal';
|
|
create function char8icregexeq (char8, text) returns bool as 'foo'
|
|
language 'internal';
|
|
create function char8icregexne (char8, text) returns bool as 'foo'
|
|
language 'internal';
|
|
create function char16icregexeq (char16, text) returns bool as 'foo'
|
|
language 'internal';
|
|
create function char16icregexne (char16, text) returns bool as 'foo'
|
|
language 'internal';
|
|
create function texticregexeq (text, text) returns bool as 'foo'
|
|
language 'internal';
|
|
create function texticregexne (text, text) returns bool as 'foo'
|
|
language 'internal';
|
|
|
|
-- add builtin functions that are new to 1.01
|
|
|
|
create operator = (leftarg = int4, rightarg = oid, procedure = int4eqoid);
|
|
create operator = (leftarg = oid, rightarg = int4, procedure = oideqint4);
|
|
create operator ~* (leftarg = char2, rightarg = text, procedure = char2icregexeq);
|
|
create operator !~* (leftarg = char2, rightarg = text, procedure = char2icregexne);
|
|
create operator ~* (leftarg = char4, rightarg = text, procedure = char4icregexeq);
|
|
create operator !~* (leftarg = char4, rightarg = text, procedure = char4icregexne);
|
|
create operator ~* (leftarg = char8, rightarg = text, procedure = char8icregexeq);
|
|
create operator !~* (leftarg = char8, rightarg = text, procedure = char8icregexne);
|
|
create operator ~* (leftarg = char16, rightarg = text, procedure = char16icregexeq);
|
|
create operator !~* (leftarg = char16, rightarg = text, procedure = char16icregexne);
|
|
create operator ~* (leftarg = text, rightarg = text, procedure = texticregexeq);
|
|
create operator !~* (leftarg = text, rightarg = text, procedure = texticregexne);
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Changes
|
|
|
|
Incompatibilities:
|
|
* 1.01 is backwards compatible with 1.0 database provided the user
|
|
follow the steps outlined in the MIGRATION_from_1.0_to_1.01 file.
|
|
If those steps are not taken, 1.01 is not compatible with 1.0 database.
|
|
|
|
Enhancements:
|
|
* added PQdisplayTuples() to libpq and changed monitor and psql to use it
|
|
* added NeXT port (requires SysVIPC implementation)
|
|
* added CAST .. AS ... syntax
|
|
* added ASC and DESC keywords
|
|
* added 'internal' as a possible language for CREATE FUNCTION
|
|
internal functions are C functions which have been statically linked
|
|
into the postgres backend.
|
|
* a new type "name" has been added for system identifiers (table names,
|
|
attribute names, etc.) This replaces the old char16 type. The
|
|
of name is set by the NAMEDATALEN #define in src/Makefile.global
|
|
* a readable reference manual that describes the query language.
|
|
* added host-based access control. A configuration file ($PGDATA/pg_hba)
|
|
is used to hold the configuration data. If host-based access control
|
|
is not desired, comment out HBA=1 in src/Makefile.global.
|
|
* changed regex handling to be uniform use of Henry Spencer's regex code
|
|
regardless of platform. The regex code is included in the distribution
|
|
* added functions and operators for case-insensitive regular expressions.
|
|
The operators are ~* and !~*.
|
|
* pg_dump uses COPY instead of SELECT loop for better performance
|
|
|
|
Bug fixes:
|
|
* fixed an optimizer bug that was causing core dumps when
|
|
functions calls were used in comparisons in the WHERE clause
|
|
* changed all uses of getuid to geteuid so that effective uids are used
|
|
* psql now returns non-zero status on errors when using -c
|
|
* applied public patches 1-14
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Release 1.0
|
|
|
|
Release date: 1995-09-05
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Changes
|
|
|
|
Copyright change:
|
|
* The copyright of Postgres 1.0 has been loosened to be freely modifiable
|
|
and modifiable for any purpose. Please read the COPYRIGHT file.
|
|
Thanks to Professor Michael Stonebraker for making this possible.
|
|
|
|
Incompatibilities:
|
|
* date formats have to be MM-DD-YYYY (or DD-MM-YYYY if you're using
|
|
EUROPEAN STYLE). This follows SQL-92 specs.
|
|
* "delimiters" is now a keyword
|
|
|
|
Enhancements:
|
|
* sql LIKE syntax has been added
|
|
* copy command now takes an optional USING DELIMITER specification.
|
|
delimiters can be any single-character string.
|
|
* IRIX 5.3 port has been added.
|
|
Thanks to Paul Walmsley and others.
|
|
* updated pg_dump to work with new libpq
|
|
* \d has been added psql
|
|
Thanks to Keith Parks
|
|
* regexp performance for architectures that use POSIX regex has been
|
|
improved due to caching of precompiled patterns.
|
|
Thanks to Alistair Crooks
|
|
* a new version of libpq++
|
|
Thanks to William Wanders
|
|
|
|
Bug fixes:
|
|
* arbitrary userids can be specified in the createuser script
|
|
* \c to connect to other databases in psql now works.
|
|
* bad pg_proc entry for float4inc() is fixed
|
|
* users with usecreatedb field set can now create databases without
|
|
having to be usesuper
|
|
* remove access control entries when the entry no longer has any
|
|
permissions
|
|
* fixed non-portable datetimes implementation
|
|
* added kerberos flags to the src/backend/Makefile
|
|
* libpq now works with kerberos
|
|
* typographic errors in the user manual have been corrected.
|
|
* btrees with multiple index never worked, now we tell you they don't
|
|
work when you try to use them
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Postgres95 Release 0.03
|
|
|
|
Release date: 1995-07-21
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Changes
|
|
|
|
Incompatible changes:
|
|
* BETA-0.3 IS INCOMPATIBLE WITH DATABASES CREATED WITH PREVIOUS VERSIONS
|
|
(due to system catalog changes and indexing structure changes).
|
|
* double-quote (") is deprecated as a quoting character for string literals;
|
|
you need to convert them to single quotes (').
|
|
* name of aggregates (eg. int4sum) are renamed in accordance with the
|
|
SQL standard (eg. sum).
|
|
* CHANGE ACL syntax is replaced by GRANT/REVOKE syntax.
|
|
* float literals (eg. 3.14) are now of type float4 (instead of float8 in
|
|
previous releases); you might have to do typecasting if you depend on it
|
|
being of type float8. If you neglect to do the typecasting and you assign
|
|
a float literal to a field of type float8, you may get incorrect values
|
|
stored!
|
|
* LIBPQ has been totally revamped so that frontend applications
|
|
can connect to multiple backends
|
|
* the usesysid field in pg_user has been changed from int2 to int4 to
|
|
allow wider range of Unix user ids.
|
|
* the netbsd/freebsd/bsd o/s ports have been consolidated into a
|
|
single BSD44_derived port. (thanks to Alistair Crooks)
|
|
|
|
SQL standard-compliance (the following details changes that makes postgres95
|
|
more compliant to the SQL-92 standard):
|
|
* the following SQL types are now built-in: smallint, int(eger), float, real,
|
|
char(N), varchar(N), date and time.
|
|
|
|
The following are aliases to existing postgres types:
|
|
smallint -> int2
|
|
integer, int -> int4
|
|
float, real -> float4
|
|
char(N) and varchar(N) are implemented as truncated text types. In
|
|
addition, char(N) does blank-padding.
|
|
* single-quote (') is used for quoting string literals; '' (in addition to
|
|
\') is supported as means of inserting a single quote in a string
|
|
* SQL standard aggregate names (MAX, MIN, AVG, SUM, COUNT) are used
|
|
(Also, aggregates can now be overloaded, i.e. you can define your
|
|
own MAX aggregate to take in a user-defined type.)
|
|
* CHANGE ACL removed. GRANT/REVOKE syntax added.
|
|
- Privileges can be given to a group using the "GROUP" keyword.
|
|
For example:
|
|
GRANT SELECT ON foobar TO GROUP my_group;
|
|
The keyword 'PUBLIC' is also supported to mean all users.
|
|
|
|
Privileges can only be granted or revoked to one user or group
|
|
at a time.
|
|
|
|
"WITH GRANT OPTION" is not supported. Only class owners can change
|
|
access control
|
|
- The default access control is to to grant users readonly access.
|
|
You must explicitly grant insert/update access to users. To change
|
|
this, modify the line in
|
|
src/backend/utils/acl.h
|
|
that defines ACL_WORLD_DEFAULT
|
|
|
|
Bug fixes:
|
|
* the bug where aggregates of empty tables were not run has been fixed. Now,
|
|
aggregates run on empty tables will return the initial conditions of the
|
|
aggregates. Thus, COUNT of an empty table will now properly return 0.
|
|
MAX/MIN of an empty table will return a tuple of value NULL.
|
|
* allow the use of \; inside the monitor
|
|
* the LISTEN/NOTIFY asynchronous notification mechanism now work
|
|
* NOTIFY in rule action bodies now work
|
|
* hash indexes work, and access methods in general should perform better.
|
|
creation of large btree indexes should be much faster. (thanks to Paul
|
|
Aoki)
|
|
|
|
Other changes and enhancements:
|
|
* addition of an EXPLAIN statement used for explaining the query execution
|
|
plan (eg. "EXPLAIN SELECT * FROM EMP" prints out the execution plan for
|
|
the query).
|
|
* WARN and NOTICE messages no longer have timestamps on them. To turn on
|
|
timestamps of error messages, uncomment the line in
|
|
src/backend/utils/elog.h:
|
|
/* define ELOG_TIMESTAMPS */
|
|
* On an access control violation, the message
|
|
"Either no such class or insufficient privilege"
|
|
will be given. This is the same message that is returned when
|
|
a class is not found. This dissuades non-privileged users from
|
|
guessing the existence of privileged classes.
|
|
* some additional system catalog changes have been made that are not
|
|
visible to the user.
|
|
|
|
libpgtcl changes:
|
|
* The -oid option has been added to the "pg_result" tcl command.
|
|
pg_result -oid returns oid of the last tuple inserted. If the
|
|
last command was not an INSERT, then pg_result -oid returns "".
|
|
* the large object interface is available as pg_lo* tcl commands:
|
|
pg_lo_open, pg_lo_close, pg_lo_creat, etc.
|
|
|
|
Portability enhancements and New Ports:
|
|
* flex/lex problems have been cleared up. Now, you should be able to use
|
|
flex instead of lex on any platforms. We no longer make assumptions of
|
|
what lexer you use based on the platform you use.
|
|
* The Linux-ELF port is now supported. Various configuration have been
|
|
tested: The following configuration is known to work:
|
|
kernel 1.2.10, gcc 2.6.3, libc 4.7.2, flex 2.5.2, bison 1.24
|
|
with everything in ELF format,
|
|
|
|
New utilities:
|
|
* ipcclean added to the distribution
|
|
ipcclean usually does not need to be run, but if your backend crashes
|
|
and leaves shared memory segments hanging around, ipcclean will
|
|
clean them up for you.
|
|
|
|
New documentation:
|
|
* the user manual has been revised and libpq documentation added.
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Postgres95 Release 0.02
|
|
|
|
Release date: 1995-05-25
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Changes
|
|
|
|
Incompatible changes:
|
|
* The SQL statement for creating a database is 'CREATE DATABASE' instead
|
|
of 'CREATEDB'. Similarly, dropping a database is 'DROP DATABASE' instead
|
|
of 'DESTROYDB'. However, the names of the executables 'createdb' and
|
|
'destroydb' remain the same.
|
|
|
|
New tools:
|
|
* pgperl - a Perl (4.036) interface to Postgres95
|
|
* pg_dump - a utility for dumping out a postgres database into a
|
|
script file containing query commands. The script files are in a ASCII
|
|
format and can be used to reconstruct the database, even on other
|
|
machines and other architectures. (Also good for converting
|
|
a Postgres 4.2 database to Postgres95 database.)
|
|
|
|
The following ports have been incorporated into postgres95-beta-0.02:
|
|
* the NetBSD port by Alistair Crooks
|
|
* the AIX port by Mike Tung
|
|
* the Windows NT port by Jon Forrest (more stuff but not done yet)
|
|
* the Linux ELF port by Brian Gallew
|
|
|
|
The following bugs have been fixed in postgres95-beta-0.02:
|
|
* new lines not escaped in COPY OUT and problem with COPY OUT when first
|
|
attribute is a '.'
|
|
* cannot type return to use the default user id in createuser
|
|
* SELECT DISTINCT on big tables crashes
|
|
* Linux installation problems
|
|
* monitor doesn't allow use of 'localhost' as PGHOST
|
|
* psql core dumps when doing \c or \l
|
|
* the "pgtclsh" target missing from src/bin/pgtclsh/Makefile
|
|
* libpgtcl has a hard-wired default port number
|
|
* SELECT DISTINCT INTO TABLE hangs
|
|
* CREATE TYPE doesn't accept 'variable' as the internallength
|
|
* wrong result using more than 1 aggregate in a SELECT
|
|
|
|
----------------------------------------------------------------------
|
|
|
|
Postgres95 Release 0.01
|
|
|
|
Release date: 1995-05-01
|
|
|
|
Initial release.
|