DROP TABLE IF EXISTS t1;
CREATE TABLE t1 (
pk1 INT NOT NULL PRIMARY KEY,
b INT NOT NULL,
c INT NOT NULL UNIQUE
) ENGINE=ndbcluster;
INSERT INTO t1 VALUES (0, 1, 0),(1,2,1),(2,3,2);
UPDATE t1 set b = c;
select * from t1 order by pk1;
pk1	b	c
0	0	0
1	1	1
2	2	2
UPDATE t1 set pk1 = 4 where pk1 = 1;
select * from t1 order by pk1;
pk1	b	c
0	0	0
2	2	2
4	1	1
UPDATE t1 set pk1 = 4 where pk1 = 2;
ERROR 23000: Duplicate entry '4' for key 1
UPDATE IGNORE t1 set pk1 = 4 where pk1 = 2;
select * from t1 order by pk1;
pk1	b	c
0	0	0
2	2	2
4	1	1
UPDATE t1 set pk1 = 1, c = 2 where pk1 = 4;
ERROR 23000: Duplicate entry '2' for key 2
UPDATE IGNORE t1 set pk1 = 1, c = 2 where pk1 = 4;
select * from t1 order by pk1;
pk1	b	c
0	0	0
2	2	2
4	1	1
UPDATE t1 set pk1 = pk1 + 10;
select * from t1 order by pk1;
pk1	b	c
10	0	0
12	2	2
14	1	1
create unique index ib on t1(b);
update t1 set c = 4 where pk1 = 12;
update ignore t1 set b = 55 where pk1 = 14;
select * from t1 order by pk1;
pk1	b	c
10	0	0
12	2	4
14	55	1
DROP TABLE IF EXISTS t1;