database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-10-15 05:46:52 +03:00
Code Activity

Track sort direction in SortGroupClause

Browse Source 
Functions make_pathkey_from_sortop() and transformWindowDefinitions(),
which receive a SortGroupClause, were determining the sort order
(ascending vs. descending) by comparing that structure's operator
strategy to BTLessStrategyNumber, but could just as easily have gotten
it from the SortGroupClause object, if it had such a field, so add
one.  This reduces the number of places that hardcode the assumption
that the strategy refers specifically to a btree strategy, rather than
some other index AM's operators.

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
2024-10-14 15:36:02 +02:00
parent e7d0cf42b1
commit 0d2aa4d493
8 changed files with 18 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
src/backend/utils/cache/lsyscache.c vendored
View File

@@ -289,7 +289,7 @@ get_equality_op_for_ordering_op(Oid opno, bool *reverse)
/*
* get_ordering_op_for_equality_op
* Get the OID of a datatype-specific btree ordering operator
* Get the OID of a datatype-specific btree "less than" ordering operator
* associated with an equality operator. (If there are multiple
* possibilities, assume any one will do.)
*