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28 lines
751 B
Text
28 lines
751 B
Text
# Establish connection con1 (user=root)
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# Establish connection con2 (user=root)
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# Establish connection con3 (user=root)
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# Drop test table
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drop table if exists t;
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# Create test table
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create table t(a INT PRIMARY KEY, b INT) engine=InnoDB;
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# Insert two rows to test table
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insert into t values(2,1);
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insert into t values(1,2);
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# Switch to connection con1
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BEGIN;
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SELECT b FROM t WHERE a=1 FOR UPDATE;
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# Switch to connection con2
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BEGIN;
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SELECT b FROM t WHERE a=2 FOR UPDATE;
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# Switch to connection con1
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SELECT b FROM t WHERE a=2 FOR UPDATE;
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# Switch to connection con2
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SELECT b FROM t WHERE a=1 FOR UPDATE;
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# Switch to connection con1
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ROLLBACK;
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# Switch to connection con2
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ROLLBACK;
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# Switch to connection con3
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Deadlocks: 1
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# Drop test table
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drop table t;
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