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38 lines
1 KiB
Text
38 lines
1 KiB
Text
connection node_2;
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connection node_1;
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CREATE TABLE t1 (f1 VARCHAR(8000)) ENGINE=InnoDB;
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INSERT INTO t1 VALUES (NULL),(CONCAT(REPEAT('x', 7999), 'a'));
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connection node_2;
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SELECT LENGTH(f1) FROM t1;
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LENGTH(f1)
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NULL
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8000
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DELETE FROM t1 WHERE f1 IS NULL;
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UPDATE t1 SET f1 = CONCAT(REPEAT('x', 7999), 'b') WHERE f1 = CONCAT(REPEAT('x', 7999), 'a');
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connection node_1;
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SELECT COUNT(*) = 1 FROM t1;
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COUNT(*) = 1
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1
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SELECT LENGTH(f1) = 8000 FROM t1;
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LENGTH(f1) = 8000
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1
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SELECT f1 = CONCAT(REPEAT('x', 7999), 'b') FROM t1;
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f1 = CONCAT(REPEAT('x', 7999), 'b')
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1
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connection node_1;
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CREATE TABLE t2 (f1 BLOB) ENGINE=InnoDB;
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INSERT INTO t2 VALUES (CONCAT(REPEAT('x', 7999), 'a'));
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SET AUTOCOMMIT=OFF;
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START TRANSACTION;
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UPDATE t2 SET f1 = 'abc' WHERE f1 = CONCAT(REPEAT('x', 7999), 'a');
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connection node_2;
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SET AUTOCOMMIT=OFF;
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START TRANSACTION;
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UPDATE t2 SET f1 = 'xyz' WHERE f1 = CONCAT(REPEAT('x', 7999), 'a');
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connection node_1;
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COMMIT;
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connection node_2;
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COMMIT;
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ERROR 40001: Deadlock found when trying to get lock; try restarting transaction
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DROP TABLE t1;
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DROP TABLE t2;
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