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Generalize hash and ordering support in amapi

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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
This commit is contained in:
Peter Eisentraut
2025-02-27 17:03:31 +01:00
parent 6eb8a1a4f9
commit ce62f2f2a0
14 changed files with 50 additions and 26 deletions
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2
contrib/bloom/blutils.c
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@ -109,6 +109,8 @@ blhandler(PG_FUNCTION_ARGS)
amroutine->amoptsprocnum = BLOOM_OPTIONS_PROC;
amroutine->amcanorder = false;
amroutine->amcanorderbyop = false;
amroutine->amcanhash = false;
amroutine->amcancrosscompare = false;
amroutine->amcanbackward = false;
amroutine->amcanunique = false;
amroutine->amcanmulticol = true;