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-rw-r--r--src/backend/parser/parse_agg.c3
-rw-r--r--src/test/regress/expected/aggregates.out6
-rw-r--r--src/test/regress/sql/aggregates.sql3
3 files changed, 10 insertions, 2 deletions
diff --git a/src/backend/parser/parse_agg.c b/src/backend/parser/parse_agg.c
index 4fbf80c2713..85cd47b7aec 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))
{
diff --git a/src/test/regress/expected/aggregates.out b/src/test/regress/expected/aggregates.out
index e074cb71bf6..f0517f95b60 100644
--- a/src/test/regress/expected/aggregates.out
+++ b/src/test/regress/expected/aggregates.out
@@ -1282,6 +1282,12 @@ select (select max(min(unique1)) from int8_tbl) from tenk1;
ERROR: aggregate function calls cannot be nested
LINE 1: select (select max(min(unique1)) from int8_tbl) from tenk1;
^
+select avg((select avg(a1.col1 order by (select avg(a2.col2) from tenk1 a3))
+ from tenk1 a1(col1)))
+from tenk1 a2(col2);
+ERROR: aggregate function calls cannot be nested
+LINE 1: select avg((select avg(a1.col1 order by (select avg(a2.col2)...
+ ^
--
-- Test removal of redundant GROUP BY columns
--
diff --git a/src/test/regress/sql/aggregates.sql b/src/test/regress/sql/aggregates.sql
index 616ef38c259..1783d19bd5e 100644
--- a/src/test/regress/sql/aggregates.sql
+++ b/src/test/regress/sql/aggregates.sql
@@ -439,6 +439,9 @@ drop table minmaxtest cascade;
-- check for correct detection of nested-aggregate errors
select max(min(unique1)) from tenk1;
select (select max(min(unique1)) from int8_tbl) from tenk1;
+select avg((select avg(a1.col1 order by (select avg(a2.col2) from tenk1 a3))
+ from tenk1 a1(col1)))
+from tenk1 a2(col2);
--
-- Test removal of redundant GROUP BY columns