postgresql/contrib
Alexander Korotkov 5ae2087202 Teach contrib/amcheck to check the unique constraint violation
Add the 'checkunique' argument to bt_index_check() and bt_index_parent_check().
When the flag is specified the procedures will check the unique constraint
violation for unique indexes.  Only one heap entry for all equal keys in
the index should be visible (including posting list entries).  Report an error
otherwise.

pg_amcheck called with the --checkunique option will do the same check for all
the indexes it checks.

Author: Anastasia Lubennikova <lubennikovaav@gmail.com>
Author: Pavel Borisov <pashkin.elfe@gmail.com>
Author: Maxim Orlov <orlovmg@gmail.com>
Reviewed-by: Mark Dilger <mark.dilger@enterprisedb.com>
Reviewed-by: Zhihong Yu <zyu@yugabyte.com>
Reviewed-by: Peter Geoghegan <pg@bowt.ie>
Reviewed-by: Aleksander Alekseev <aleksander@timescale.com>
Discussion: https://postgr.es/m/CALT9ZEHRn5xAM5boga0qnrCmPV52bScEK2QnQ1HmUZDD301JEg%40mail.gmail.com
2023-10-28 00:21:23 +03:00
..
adminpack Use "data directory" not "current directory" in error messages. 2023-03-16 12:04:08 -04:00
amcheck Teach contrib/amcheck to check the unique constraint violation 2023-10-28 00:21:23 +03:00
auth_delay Fix copy-pasto in contrib/auth_delay/meson.build variable name. 2023-04-02 09:31:10 -07:00
auto_explain Pre-beta mechanical code beautification. 2023-05-19 17:24:48 -04:00
basebackup_to_shell Pre-beta mechanical code beautification. 2023-05-19 17:24:48 -04:00
basic_archive Pre-beta mechanical code beautification. 2023-05-19 17:24:48 -04:00
bloom Remove the "snapshot too old" feature. 2023-09-05 19:53:43 +12:00
bool_plperl Update copyright for 2023 2023-01-02 15:00:37 -05:00
btree_gin Update copyright for 2023 2023-01-02 15:00:37 -05:00
btree_gist Add trailing commas to enum definitions 2023-10-26 09:20:54 +02:00
citext Remove duplicate words in docs and code comments. 2023-10-09 09:18:47 +05:30
cube Handle \v as a whitespace character in parsers 2023-07-06 08:16:24 +09:00
dblink dblink: Replace WAIT_EVENT_EXTENSION with custom wait events 2023-10-05 10:23:22 +09:00
dict_int Update copyright for 2023 2023-01-02 15:00:37 -05:00
dict_xsyn Update copyright for 2023 2023-01-02 15:00:37 -05:00
earthdistance Doc: improve commentary about providing our own definitions of M_PI. 2023-01-08 16:25:33 -05:00
file_fdw Re-allow FDWs and custom scan providers to replace joins with pseudoconstant quals. 2023-08-15 16:45:00 +09:00
fuzzystrmatch Add some const qualifiers 2023-09-26 11:28:57 +01:00
hstore Constify crc32_sz 2023-10-05 08:53:21 +02:00
hstore_plperl Update copyright for 2023 2023-01-02 15:00:37 -05:00
hstore_plpython In hstore_plpython, avoid crashing when return value isn't a mapping. 2023-04-27 11:55:06 -04:00
intagg Update copyright for 2023 2023-01-02 15:00:37 -05:00
intarray Fix another bug in parent page splitting during GiST index build. 2023-09-26 14:14:49 +03:00
isn Rework pg_input_error_message(), now renamed pg_input_error_info() 2023-02-28 08:04:13 +09:00
jsonb_plperl Update copyright for 2023 2023-01-02 15:00:37 -05:00
jsonb_plpython Update copyright for 2023 2023-01-02 15:00:37 -05:00
lo Update copyright for 2023 2023-01-02 15:00:37 -05:00
ltree Pre-beta mechanical code beautification. 2023-05-19 17:24:48 -04:00
ltree_plpython Update copyright for 2023 2023-01-02 15:00:37 -05:00
oid2name Mark options as deprecated in usage output 2023-03-02 14:36:37 +01:00
pageinspect pageinspect: Fix gist_page_items() with included columns 2023-05-19 12:37:58 +09:00
passwordcheck Update copyright for 2023 2023-01-02 15:00:37 -05:00
pg_buffercache Add pg_buffercache_usage_counts() to contrib/pg_buffercache. 2023-04-07 14:25:53 -04:00
pg_freespacemap Update copyright for 2023 2023-01-02 15:00:37 -05:00
pg_prewarm Add trailing commas to enum definitions 2023-10-26 09:20:54 +02:00
pg_stat_statements Add trailing commas to enum definitions 2023-10-26 09:20:54 +02:00
pg_surgery Add trailing commas to enum definitions 2023-10-26 09:20:54 +02:00
pg_trgm Update contrib/trgm_regexp's memory management. 2023-04-08 22:09:17 +12:00
pg_visibility Update copyright for 2023 2023-01-02 15:00:37 -05:00
pg_walinspect During online checkpoints, insert XLOG_CHECKPOINT_REDO at redo point. 2023-10-19 14:47:29 -04:00
pgcrypto Add trailing commas to enum definitions 2023-10-26 09:20:54 +02:00
pgrowlocks pgrowlocks: change lock mode output labels for consistency 2023-09-26 17:41:48 -04:00
pgstattuple Update copyright for 2023 2023-01-02 15:00:37 -05:00
postgres_fdw Add trailing commas to enum definitions 2023-10-26 09:20:54 +02:00
seg Handle \v as a whitespace character in parsers 2023-07-06 08:16:24 +09:00
sepgsql Catalog not-null constraints 2023-08-25 13:31:24 +02:00
spi Update copyright for 2023 2023-01-02 15:00:37 -05:00
sslinfo Revert "Add notBefore and notAfter to SSL cert info display" 2023-07-20 17:18:12 +02:00
start-scripts Remove gratuitous references to postmaster program 2023-01-26 10:48:32 +01:00
tablefunc Update copyright for 2023 2023-01-02 15:00:37 -05:00
tcn Update copyright for 2023 2023-01-02 15:00:37 -05:00
test_decoding Add flush option to pg_logical_emit_message() 2023-10-18 11:24:59 +09:00
tsm_system_rows Update copyright for 2023 2023-01-02 15:00:37 -05:00
tsm_system_time Update copyright for 2023 2023-01-02 15:00:37 -05:00
unaccent unaccent: Tweak value of PYTHON when building without Python support 2023-09-27 14:40:23 +09:00
uuid-ossp New header varatt.h split off from postgres.h 2023-01-10 05:54:36 +01:00
vacuumlo Add trailing commas to enum definitions 2023-10-26 09:20:54 +02:00
xml2 Update copyright for 2023 2023-01-02 15:00:37 -05:00
contrib-global.mk
Makefile Remove the "snapshot too old" feature. 2023-09-05 19:53:43 +12:00
meson.build Remove the "snapshot too old" feature. 2023-09-05 19:53:43 +12:00
README

The PostgreSQL contrib tree
---------------------------

This subtree contains porting tools, analysis utilities, and plug-in
features that are not part of the core PostgreSQL system, mainly
because they address a limited audience or are too experimental to be
part of the main source tree.  This does not preclude their
usefulness.

User documentation for each module appears in the main SGML
documentation.

When building from the source distribution, these modules are not
built automatically, unless you build the "world" target.  You can
also build and install them all by running "make all" and "make
install" in this directory; or to build and install just one selected
module, do the same in that module's subdirectory.

Some directories supply new user-defined functions, operators, or
types.  To make use of one of these modules, after you have installed
the code you need to register the new SQL objects in the database
system by executing a CREATE EXTENSION command.  In a fresh database,
you can simply do

    CREATE EXTENSION module_name;

See the PostgreSQL documentation for more information about this
procedure.