oceanbase

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drop table if exists t1;
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create table t1(c1 int primary key, c2 int);
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insert into t1 values(1,1);
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set autocommit=0;
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insert into t1 values(1,1);
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ERROR 23000: Duplicate entry '1' for key 'PRIMARY'
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rollback;
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insert into t1 values(1,1);
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ERROR 23000: Duplicate entry '1' for key 'PRIMARY'
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rollback;
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