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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2023-03-13 12:40:28 -0400 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2023-03-13 12:40:28 -0400 |
| commit | 30dbdbe75384bcb034172c781b24bc982434a967 (patch) | |
| tree | abbade9a7c394f76d5e298a55c0d32c86bd1fc04 /src/backend/parser/parse_agg.c | |
| parent | 9f8377f7a27910bf0f35bf5169a8046731948a79 (diff) | |
| download | postgresql-30dbdbe75384bcb034172c781b24bc982434a967.tar.gz | |
Fix failure to detect some cases of improperly-nested aggregates.
check_agg_arguments_walker() supposed that it needn't descend into
the arguments of a lower-level aggregate function, but this is
just wrong in the presence of multiple levels of sub-select. The
oversight would lead to executor failures on queries that should
be rejected. (Prior to v11, they actually were rejected, thanks
to a "redundant" execution-time check.)
Per bug #17835 from Anban Company. Back-patch to all supported
branches.
Discussion: https://postgr.es/m/17835-4f29f3098b2d0ba4@postgresql.org
Diffstat (limited to 'src/backend/parser/parse_agg.c')
| -rw-r--r-- | src/backend/parser/parse_agg.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/src/backend/parser/parse_agg.c b/src/backend/parser/parse_agg.c index 4fbf80c271..85cd47b7ae 100644 --- a/src/backend/parser/parse_agg.c +++ b/src/backend/parser/parse_agg.c @@ -736,8 +736,7 @@ check_agg_arguments_walker(Node *node, context->min_agglevel > agglevelsup) context->min_agglevel = agglevelsup; } - /* no need to examine args of the inner aggregate */ - return false; + /* Continue and descend into subtree */ } if (IsA(node, GroupingFunc)) { |