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DROP TABLE IF EXISTS t1;
CREATE TABLE t1 (a INT, b CHAR(8), pk INT AUTO_INCREMENT PRIMARY KEY) ENGINE=rocksdb;
INSERT INTO t1 (a,b) VALUES (1,'a'),(2,'b'),(3,'c'),(4,'d'),(5,'e'),(10000,'foobar');
INSERT INTO t1 (a,b) SELECT a, b FROM t1;
UPDATE t1 SET a=a+100;
SELECT a,b FROM t1;
a b
101 a
101 a
10100 foobar
10100 foobar
102 b
102 b
103 c
103 c
104 d
104 d
105 e
105 e
UPDATE t1 SET a=a-100, b=DEFAULT WHERE a>100;
SELECT a,b FROM t1;
a b
1 NULL
1 NULL
10000 NULL
10000 NULL
2 NULL
2 NULL
3 NULL
3 NULL
4 NULL
4 NULL
5 NULL
5 NULL
UPDATE t1 SET b = 'update' WHERE a <= 4 ORDER BY b DESC, a ASC LIMIT 1;
SELECT a,b FROM t1;
a b
1 NULL
1 update
10000 NULL
10000 NULL
2 NULL
2 NULL
3 NULL
3 NULL
4 NULL
4 NULL
5 NULL
5 NULL
DROP TABLE t1;
CREATE TABLE t1 (a INT, b CHAR(8), pk INT AUTO_INCREMENT PRIMARY KEY) ENGINE=rocksdb;
INSERT INTO t1 (a,b) VALUES (1,'a'),(2,'b'),(3,'c'),(4,'d'),(5,'e'),(10000,'foobar');
INSERT INTO t1 (a,b) SELECT a, b FROM t1;
BEGIN;
UPDATE t1 SET a=a+100;
UPDATE t1 SET a=a-50, b=DEFAULT WHERE a>100;
COMMIT;
SELECT * FROM t1 ORDER BY pk;
a b pk
10050 NULL 12
10050 NULL 6
51 NULL 1
51 NULL 7
52 NULL 2
52 NULL 8
53 NULL 3
53 NULL 9
54 NULL 10
54 NULL 4
55 NULL 11
55 NULL 5
BEGIN;
UPDATE t1 SET b = 'update' WHERE a <= 4 ORDER BY a DESC, b ASC LIMIT 3;
UPDATE t1 SET b = '';
ROLLBACK;
SELECT * FROM t1 ORDER BY pk;
a b pk
51 NULL 1
52 NULL 2
53 NULL 3
54 NULL 4
55 NULL 5
10050 NULL 6
51 NULL 7
52 NULL 8
53 NULL 9
54 NULL 10
55 NULL 11
10050 NULL 12
BEGIN;
UPDATE t1 SET b = 'update2' WHERE a <= 100;
SAVEPOINT spt1;
UPDATE t1 SET b = '';
ROLLBACK TO SAVEPOINT spt1;
ERROR HY000: MyRocks currently does not support ROLLBACK TO SAVEPOINT if modifying rows.
UPDATE t1 SET b = 'upd' WHERE a = 10050;
COMMIT;
ERROR HY000: This transaction was rolled back and cannot be committed. Only supported operation is to roll it back, so all pending changes will be discarded. Please restart another transaction.
SELECT * FROM t1 ORDER BY pk;
a b pk
51 NULL 1
52 NULL 2
53 NULL 3
54 NULL 4
55 NULL 5
10050 NULL 6
51 NULL 7
52 NULL 8
53 NULL 9
54 NULL 10
55 NULL 11
10050 NULL 12
DROP TABLE t1;
CREATE TABLE t1 (a INT, b CHAR(8), UNIQUE INDEX(a)) ENGINE=RocksDB;
INSERT INTO t1 (a,b) VALUES (1,'foo'),(2,'bar');
UPDATE t1 SET a=a+100;
SELECT * FROM t1;
a b
101 foo
102 bar
DROP TABLE t1;
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