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Add stratnum GiST support function

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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.

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
2024-01-19 15:41:44 +01:00
parent b725b7eec4
commit 6db4598fcb
17 changed files with 273 additions and 8 deletions
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2
contrib/btree_gist/btree_gist.control
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@ -1,6 +1,6 @@
# btree_gist extension
comment = 'support for indexing common datatypes in GiST'
default_version = '1.7'
default_version = '1.8'
module_pathname = '$libdir/btree_gist'
relocatable = true
trusted = true