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DROP TABLE IF EXISTS t1;
CREATE TABLE t1 (a <INT_COLUMN>, b <CHAR_COLUMN>) ENGINE=<STORAGE_ENGINE> <CUSTOM_TABLE_OPTIONS>;
INSERT INTO t1 (a,b) VALUES (1,'a'),(2,'b'),(3,'c'),(4,'d'),(5,'e'),(6,'f'),(7,'g'),(8,'h'),(10000,'foobar');
INSERT INTO t1 (a,b) SELECT a, b FROM t1;
BEGIN;
DELETE FROM t1 WHERE b IN ('c');
SELECT a,b FROM t1;
a b
1 a
1 a
10000 foobar
10000 foobar
2 b
2 b
4 d
4 d
5 e
5 e
6 f
6 f
7 g
7 g
8 h
8 h
DELETE FROM t1 WHERE a < 0 OR b = 'a';
COMMIT;
SELECT a,b FROM t1;
a b
10000 foobar
10000 foobar
2 b
2 b
4 d
4 d
5 e
5 e
6 f
6 f
7 g
7 g
8 h
8 h
BEGIN;
DELETE FROM t1 WHERE a <= 4 ORDER BY b DESC LIMIT 1;
SAVEPOINT spt1;
DELETE FROM t1;
RELEASE SAVEPOINT spt1;
ROLLBACK;
SELECT a,b FROM t1;
a b
10000 foobar
10000 foobar
2 b
2 b
4 d
4 d
5 e
5 e
6 f
6 f
7 g
7 g
8 h
8 h
BEGIN;
DELETE FROM t1 WHERE a <= 4 ORDER BY b DESC LIMIT 1;
SAVEPOINT spt1;
DELETE FROM t1;
INSERT INTO t1 (a,b) VALUES (1,'a');
ROLLBACK TO SAVEPOINT spt1;
COMMIT;
DROP TABLE t1;
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