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Revise the header comment for match_clause_to_indexcol()

author Alexander Korotkov <akorotkov@postgresql.org>

Tue, 4 Feb 2025 21:18:47 +0000 (23:18 +0200)

committer Alexander Korotkov <akorotkov@postgresql.org>

Tue, 4 Feb 2025 21:18:47 +0000 (23:18 +0200)

Since d4378c0005e6, match_clause_to_indexcol() doesn't always return NULL
for an OR clause. This commit reflects that in the function header comment.

Reported-by: Pavel Borisov <pashkin.elfe@gmail.com>

src/backend/optimizer/path/indxpath.c patch | blob | blame | history

diff --git a/src/backend/optimizer/path/indxpath.c b/src/backend/optimizer/path/indxpath.c

index fa3edf60f3cf14f18cc6cf1a4a1051654e2f02e4..a58cf5bad1a5ed937f2af3de5c787ca1a952d7f0 100644 (file)

--- a/src/backend/optimizer/path/indxpath.c

+++ b/src/backend/optimizer/path/indxpath.c

@@ -2639,8 +2639,9 @@ match_clause_to_index(PlannerInfo *root,

* Returns an IndexClause if the clause can be used with this index key,

* or NULL if not.

- * NOTE: returns NULL if clause is an OR or AND clause; it is the

- * responsibility of higher-level routines to cope with those.

+ * NOTE: This routine always returns NULL if the clause is an AND clause.

+ * Higher-level routines deal with OR and AND clauses. OR clause can be

+ * matched as a whole by match_orclause_to_indexcol() though.

static IndexClause *

match_clause_to_indexcol(PlannerInfo *root,

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