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-rw-r--r--mysql-test/main/derived.result23
1 files changed, 23 insertions, 0 deletions
diff --git a/mysql-test/main/derived.result b/mysql-test/main/derived.result
index bee77be2e11..a9d97132535 100644
--- a/mysql-test/main/derived.result
+++ b/mysql-test/main/derived.result
@@ -1327,5 +1327,28 @@ a b
DROP VIEW v1;
DROP TABLE t1;
#
+# MDEV-28616: derived table over union with order by clause that
+# contains subquery with unresolvable column reference
+#
+SELECT 1 FROM (
+SELECT 1 UNION SELECT 2 ORDER BY (SELECT 1 FROM DUAL WHERE xxx = 0)
+) dt;
+ERROR 42S22: Unknown column 'xxx' in 'where clause'
+create table t1 (a int, b int);
+insert into t1 values (3,8), (7,2), (1,4), (5,9);
+create table t2 (a int, b int);
+insert into t2 values (9,1), (7,3), (2,6);
+create table t3 (c int, d int);
+insert into t3 values (7,8), (1,2), (3,8);
+select * from
+(
+select a,b from t1 where t1.a > 3
+union
+select a,b from t2 where t2.b < 6
+order by (a - b / (select a + max(c) from t3 where d = x))
+) dt;
+ERROR 42S22: Unknown column 'x' in 'where clause'
+drop table t1,t2,t3;
+#
# End of 10.3 tests
#