test for ALTER TABLE ... SET DEFAULT

mysql-test/r/default.result

@@ -3076,3 +3076,23 @@ a	b	c
 1	2	1
 1	2	NULL
 drop table t1;
+create table t1 (a int default 1, b int default (1+1), c int);
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `a` int(11) DEFAULT '1',
+  `b` int(11) DEFAULT (1+1),
+  `c` int(11) DEFAULT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+alter table t1 alter a set default (2+3), alter b set default 4,
+alter c set default (-a);
+alter table t1 alter a set default 1+2;
+ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near '+2' at line 1
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `a` int(11) DEFAULT (2+3),
+  `b` int(11) DEFAULT '4',
+  `c` int(11) DEFAULT (-a)
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+drop table t1;

mysql-test/t/default.test

@@ -1849,3 +1849,15 @@ insert t1 (c) values (a);
 insert t1 (c) values (b);
 select * from t1;
 drop table t1;
+
+#
+# ALTER ... SET DEFAULT
+#
+create table t1 (a int default 1, b int default (1+1), c int);
+show create table t1;
+alter table t1 alter a set default (2+3), alter b set default 4,
+               alter c set default (-a);
+--error ER_PARSE_ERROR
+alter table t1 alter a set default 1+2;
+show create table t1;
+drop table t1;