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93ee38eade
Add a new bt_metap() column to display the metapage's allequalimage
field. Also add three new columns to contrib/pageinspect's
bt_page_items() function:
* Add a boolean column ("dead") that displays the LP_DEAD bit value for
each non-pivot tuple.
* Add a TID column ("htid") that displays a single heap TID value for
each tuple. This is the TID that is returned by BTreeTupleGetHeapTID(),
so comparable values are shown for pivot tuples, plain non-pivot tuples,
and posting list tuples.
* Add a TID array column ("tids") that displays TIDs from each tuple's
posting list, if any. This works just like the "tids" column from
pageinspect's gin_leafpage_items() function.
No version bump for the pageinspect extension, since there hasn't been a
stable Postgres release since the last version bump (the last bump was
part of commit 58b4cb30).
Author: Peter Geoghegan
Discussion: https://postgr.es/m/CAH2-WzmSMmU2eNvY9+a4MNP+z02h6sa-uxZvN3un6jY02ZVBSw@mail.gmail.com
70 lines
1.7 KiB
SQL
70 lines
1.7 KiB
SQL
/* contrib/pageinspect/pageinspect--1.7--1.8.sql */
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-- complain if script is sourced in psql, rather than via ALTER EXTENSION
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\echo Use "ALTER EXTENSION pageinspect UPDATE TO '1.8'" to load this file. \quit
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--
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-- heap_tuple_infomask_flags()
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--
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CREATE FUNCTION heap_tuple_infomask_flags(
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t_infomask integer,
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t_infomask2 integer,
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raw_flags OUT text[],
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combined_flags OUT text[])
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RETURNS record
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AS 'MODULE_PATHNAME', 'heap_tuple_infomask_flags'
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LANGUAGE C STRICT PARALLEL SAFE;
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--
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-- bt_metap()
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--
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DROP FUNCTION bt_metap(text);
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CREATE FUNCTION bt_metap(IN relname text,
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OUT magic int4,
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OUT version int4,
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OUT root int4,
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OUT level int4,
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OUT fastroot int4,
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OUT fastlevel int4,
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OUT oldest_xact int4,
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OUT last_cleanup_num_tuples real,
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OUT allequalimage boolean)
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AS 'MODULE_PATHNAME', 'bt_metap'
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LANGUAGE C STRICT PARALLEL SAFE;
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--
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-- bt_page_items(text, int4)
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--
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DROP FUNCTION bt_page_items(text, int4);
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CREATE FUNCTION bt_page_items(IN relname text, IN blkno int4,
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OUT itemoffset smallint,
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OUT ctid tid,
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OUT itemlen smallint,
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OUT nulls bool,
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OUT vars bool,
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OUT data text,
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OUT dead boolean,
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OUT htid tid,
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OUT tids tid[])
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RETURNS SETOF record
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AS 'MODULE_PATHNAME', 'bt_page_items'
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LANGUAGE C STRICT PARALLEL SAFE;
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--
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-- bt_page_items(bytea)
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--
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DROP FUNCTION bt_page_items(bytea);
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CREATE FUNCTION bt_page_items(IN page bytea,
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OUT itemoffset smallint,
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OUT ctid tid,
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OUT itemlen smallint,
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OUT nulls bool,
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OUT vars bool,
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OUT data text,
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OUT dead boolean,
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OUT htid tid,
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OUT tids tid[])
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RETURNS SETOF record
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AS 'MODULE_PATHNAME', 'bt_page_items_bytea'
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LANGUAGE C STRICT PARALLEL SAFE;
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