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