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-rw-r--r--mysql-test/main/union.test18
1 files changed, 18 insertions, 0 deletions
diff --git a/mysql-test/main/union.test b/mysql-test/main/union.test
index 33adbb4603d..2e5a04a27f4 100644
--- a/mysql-test/main/union.test
+++ b/mysql-test/main/union.test
@@ -1866,5 +1866,23 @@ select * from t1 where a > 4;
drop table t1,t2,t3;
--echo #
+--echo # MDEV-24387: Wrong number of decimal digits in certain UNION/Subqery
+--echo # constellation
+--echo #
+
+--disable_ps_protocol
+--enable_metadata
+
+SELECT CAST(1 AS UNSIGNED) UNION ALL SELECT * from (SELECT NULL) t;
+SELECT CAST(1 AS SIGNED) UNION ALL SELECT * from (SELECT NULL) t;
+SELECT CAST(1 AS SIGNED) UNION ALL SELECT * from (SELECT CAST(1 AS UNSIGNED)) t;
+
+SELECT CAST(1 AS UNSIGNED) UNION ALL SELECT NULL;
+SELECT CAST(1 AS UNSIGNED) UNION ALL SELECT CAST(1 AS SIGNED);
+
+--disable_metadata
+--enable_ps_protocol
+
+--echo #
--echo # End of 10.3 tests
--echo #