Merge remote-tracking branch 'origin/10.3' into 10.4

1 files changed, 26 insertions, 1 deletions

diff --git a/mysql-test/main/type_decimal.result b/mysql-test/main/type_decimal.result
index 4d0f6fc12fd..aed56164a39 100644
--- a/mysql-test/main/type_decimal.result
+++ b/mysql-test/main/type_decimal.result
@@ -1033,6 +1033,31 @@ c1	c2
 0.123456	0.123456
 SET sql_mode=DEFAULT;
 #
+# MDEV-12574 MAX(old_decimal) produces a column of the old DECIMAL type
+#
+SHOW CREATE TABLE t1dec102;
+Table	Create Table
+t1dec102	CREATE TABLE `t1dec102` (
+  `a` decimal(10,2)/*old*/ DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+CREATE TABLE t1 AS SELECT a, MAX(a), COALESCE(a) FROM t1dec102;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `a` decimal(10,2) DEFAULT NULL,
+  `MAX(a)` decimal(10,2) DEFAULT NULL,
+  `COALESCE(a)` decimal(10,2) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t1;
+CREATE TABLE t1 AS SELECT a FROM t1dec102 UNION SELECT a FROM t1dec102;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `a` decimal(10,2) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t1;
+DROP TABLE t1dec102;
+#
 # End of 10.2 tests
 #
 #
@@ -1046,7 +1071,7 @@ CREATE TABLE t1 AS SELECT MAX(a) FROM t1dec102;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `MAX(a)` decimal(10,2)/*old*/ DEFAULT NULL
+  `MAX(a)` decimal(10,2) DEFAULT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 DROP TABLE t1;
 CREATE TABLE t1 AS SELECT COALESCE(a) FROM t1dec102;