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Add stratnum GiST support function

This is support function 12 for the GiST AM and translates
"well-known" RT*StrategyNumber values into whatever strategy number is
used by the opclass (since no particular numbers are actually
required).  We will use this to support temporal PRIMARY
KEY/UNIQUE/FOREIGN KEY/FOR PORTION OF functionality.

This commit adds two implementations, one for internal GiST opclasses
(just an identity function) and another for btree_gist opclasses.  It
updates btree_gist from 1.7 to 1.8, adding the support function for
all its opclasses.

(previously committed as 6db4598fcb, reverted by 8aee330af55; this is
essentially unchanged from those)

Author: Paul A. Jungwirth <pj@illuminatedcomputing.com>
Reviewed-by: Peter Eisentraut <peter@eisentraut.org>
Reviewed-by: jian he <jian.universality@gmail.com>
Discussion: https://www.postgresql.org/message-id/flat/CA+renyUApHgSZF9-nd-a0+OPGharLQLO=mDHcY4_qQ0+noCUVg@mail.gmail.com
This commit is contained in:
Peter Eisentraut
2024-09-17 10:19:26 +02:00
parent 95d6e9af07
commit 7406ab623f
17 changed files with 273 additions and 8 deletions

View File

@ -38,7 +38,8 @@
#define GIST_FETCH_PROC 9
#define GIST_OPTIONS_PROC 10
#define GIST_SORTSUPPORT_PROC 11
#define GISTNProcs 11
#define GIST_STRATNUM_PROC 12
#define GISTNProcs 12
/*
* Page opaque data in a GiST index page.