Horton

Generalize hash and ordering support in amapi

Peter Eisentraut <peter@eisentraut.org>

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Commit: ce62f2f2a0a48d021f250ba84dfcab5d45ddc914
Author: Peter Eisentraut <peter@eisentraut.org>
Date: 2025-02-27T16:03:31Z
Releases: 18.0 
Generalize hash and ordering support in amapi

Stop comparing access method OID values against HASH_AM_OID and
BTREE_AM_OID, and instead check the IndexAmRoutine for an index to see
if it advertises its ability to perform the necessary ordering,
hashing, or cross-type comparing functionality.  A field amcanorder
already existed, this uses it more widely.  Fields amcanhash and
amcancrosscompare are added for the other purposes.

Author: Mark Dilger <mark.dilger@enterprisedb.com>
Discussion: https://www.postgresql.org/message-id/flat/E72EAA49-354D-4C2E-8EB9-255197F55330@enterprisedb.com

Files

PathChange+/−
contrib/bloom/blutils.c modified +2 −0
doc/src/sgml/indexam.sgml modified +4 −0
src/backend/access/brin/brin.c modified +2 −0
src/backend/access/gin/ginutil.c modified +2 −0
src/backend/access/gist/gist.c modified +2 −0
src/backend/access/hash/hash.c modified +2 −0
src/backend/access/nbtree/nbtree.c modified +2 −0
src/backend/access/spgist/spgutils.c modified +2 −0
src/backend/commands/opclasscmds.c modified +17 −17
src/backend/executor/nodeIndexscan.c modified +2 −2
src/backend/utils/cache/lsyscache.c modified +4 −4
src/include/access/amapi.h modified +4 −0
src/test/modules/dummy_index_am/dummy_index_am.c modified +2 −0
src/test/regress/expected/alter_generic.out modified +3 −3

Documentation touched

Discussion