diff options
| author | Peter Eisentraut | 2025-03-07 09:51:53 +0000 |
|---|---|---|
| committer | Peter Eisentraut | 2025-03-07 10:46:33 +0000 |
| commit | af4002b381d86df6479962953d82f03ecb4e2e06 (patch) | |
| tree | 70b568724f3dff02edcb4f6d3e87fa5711d59bb5 /src/backend/optimizer/plan/analyzejoins.c | |
| parent | 6da469badaffec32f8a804181cca279561467378 (diff) | |
Rename amcancrosscompare
After more discussion about commit ce62f2f2a0a, rename the index AM
property amcancrosscompare to two separate properties
amconsistentequality and amconsistentordering. Also improve the
documentation and update some comments that were previously missed.
Reported-by: Tom Lane <[email protected]>
Discussion: https://www.postgresql.org/message-id/flat/E1tngY6-0000UL-2n%40gemulon.postgresql.org
Diffstat (limited to 'src/backend/optimizer/plan/analyzejoins.c')
| -rw-r--r-- | src/backend/optimizer/plan/analyzejoins.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/src/backend/optimizer/plan/analyzejoins.c b/src/backend/optimizer/plan/analyzejoins.c index b1e173c63bc..8a8d4a2af33 100644 --- a/src/backend/optimizer/plan/analyzejoins.c +++ b/src/backend/optimizer/plan/analyzejoins.c @@ -1083,9 +1083,10 @@ query_supports_distinctness(Query *query) * the values are distinct. (Note: the opids entries could be cross-type * operators, and thus not exactly the equality operators that the subquery * would use itself. We use equality_ops_are_compatible() to check - * compatibility. That looks at btree or hash opfamily membership, and so - * should give trustworthy answers for all operators that we might need - * to deal with here.) + * compatibility. That looks at opfamily membership for index AMs that have + * declared that they support consistent equality semantics within an + * opfamily, and so should give trustworthy answers for all operators that we + * might need to deal with here.) */ bool query_is_distinct_for(Query *query, List *colnos, List *opids) |