1drop table if exists t1;
2CREATE TABLE t1 (a int, unique (a), b int not null, unique(b), c int not null, index(c));
3replace into t1 values (1,1,1),(2,2,2),(3,1,3);
4select * from t1;
5a b c
63 1 3
72 2 2
8check table t1;
9Table Op Msg_type Msg_text
10test.t1 check status OK
11drop table t1;
12