36 lines
751 B
Plaintext
36 lines
751 B
Plaintext
DROP TABLE IF EXISTS t1;
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CREATE TABLE t1 (a INT, b CHAR(8), pk INT AUTO_INCREMENT PRIMARY KEY) ENGINE=xengine;
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INSERT INTO t1 (a,b) VALUES (1,'a'),(2,'b'),(3,'a');
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connect con1,localhost,root,,;
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BEGIN;
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SELECT a,b FROM t1 WHERE b='a' FOR UPDATE;
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a b
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1 a
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3 a
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connection default;
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SET lock_wait_timeout = 1;
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SELECT a,b FROM t1 WHERE b='a';
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a b
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1 a
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3 a
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SELECT a,b FROM t1 WHERE b='a' LOCK IN SHARE MODE;
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ERROR HY000: Lock wait timeout exceeded; try restarting transaction
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UPDATE t1 SET b='c' WHERE b='a';
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ERROR HY000: Lock wait timeout exceeded; try restarting transaction
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connection con1;
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COMMIT;
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SELECT a,b FROM t1;
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a b
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1 a
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2 b
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3 a
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disconnect con1;
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connection default;
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UPDATE t1 SET b='c' WHERE b='a';
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SELECT a,b FROM t1;
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a b
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1 c
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2 b
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3 c
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DROP TABLE t1;
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