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23 lines
457 B
Text
23 lines
457 B
Text
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set storage_engine='tokudb';
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drop table if exists t;
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create table t (a int primary key, b int);
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insert into t values (1,0);
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set session transaction isolation level read committed;
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begin;
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select * from t where a=1 for update;
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a b
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1 0
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update t set b=b+1 where a=1;
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set session transaction isolation level read committed;
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begin;
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select * from t where a=1 for update;
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commit;
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a b
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1 1
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update t set b=b+1 where a=1;
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select * from t;
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a b
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1 2
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commit;
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drop table t;
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