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Fix incorrect hash equality operator bug in Memoize

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In v14, because we don't have a field in RestrictInfo to cache both the
left and right type's hash equality operator, we just restrict the scope
of Memoize to only when the left and right types of a RestrictInfo are the
same.

In master we add another field to RestrictInfo and cache both hash
equality operators.

Reported-by: Jaime Casanova
Author: David Rowley
Discussion: https://postgr.es/m/20210929185544.GB24346%40ahch-to
Backpatch-through: 14
This commit is contained in:
David Rowley
2021-11-08 14:40:33 +13:00
parent e2fbb88372
commit 39a3105678
6 changed files with 54 additions and 22 deletions
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3
src/backend/nodes/outfuncs.c
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@ -2565,7 +2565,8 @@ _outRestrictInfo(StringInfo str, const RestrictInfo *node)
WRITE_NODE_FIELD(right_em);
WRITE_BOOL_FIELD(outer_is_left);
WRITE_OID_FIELD(hashjoinoperator);
WRITE_OID_FIELD(hasheqoperator);
WRITE_OID_FIELD(left_hasheqoperator);
WRITE_OID_FIELD(right_hasheqoperator);
}
static void