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-rw-r--r--mysql-test/t/key.test23
1 files changed, 23 insertions, 0 deletions
diff --git a/mysql-test/t/key.test b/mysql-test/t/key.test
index 0a86c1cd145..af3509c8454 100644
--- a/mysql-test/t/key.test
+++ b/mysql-test/t/key.test
@@ -301,3 +301,26 @@ drop table t1;
--error 1391
create table t1 (c char(10), index (c(0)));
+
+#
+# Bug #6126: Duplicate columns in keys should fail
+# Bug #6252: (dup)
+#
+--error 1060
+create table t1 (c char(10), index (c,c));
+--error 1060
+create table t1 (c1 char(10), c2 char(10), index (c1,c2,c1));
+--error 1060
+create table t1 (c1 char(10), c2 char(10), index (c1,c1,c2));
+--error 1060
+create table t1 (c1 char(10), c2 char(10), index (c2,c1,c1));
+create table t1 (c1 char(10), c2 char(10));
+--error 1060
+alter table t1 add key (c1,c1);
+--error 1060
+alter table t1 add key (c2,c1,c1);
+--error 1060
+alter table t1 add key (c1,c2,c1);
+--error 1060
+alter table t1 add key (c1,c1,c2);
+drop table t1;