From dc777f9db3e9a5f979f4f847c96949ca5555f355 Mon Sep 17 00:00:00 2001 From: Tom Lane Date: Tue, 27 Jun 2017 17:51:11 -0400 Subject: [PATCH] Re-allow SRFs and window functions within sub-selects within aggregates. check_agg_arguments_walker threw an error upon seeing a SRF or window function, but that is too aggressive: if the function is within a sub-select then it's perfectly fine. I broke the SRF case in commit 0436f6bde by copying the logic for window functions ... but that was broken too, and had been since commit eaccfded9. Repair both cases in HEAD, and the window function case back to 9.3. 9.2 gets this right. --- src/backend/parser/parse_agg.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/backend/parser/parse_agg.c b/src/backend/parser/parse_agg.c index c984b7d5e46..048b3c12488 100644 --- a/src/backend/parser/parse_agg.c +++ b/src/backend/parser/parse_agg.c @@ -508,7 +508,7 @@ check_agg_arguments_walker(Node *node, return false; } /* We can throw error on sight for a window function */ - if (IsA(node, WindowFunc)) + if (IsA(node, WindowFunc) && context->sublevels_up == 0) ereport(ERROR, (errcode(ERRCODE_GROUPING_ERROR), errmsg("aggregate function calls cannot contain window function calls"), -- 2.39.5