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18 lines
599 B
MySQL
18 lines
599 B
MySQL
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drop table if exists t;
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drop table if exists s;
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create table t(a Nullable(Int64), b Nullable(Int64), c Nullable(String)) engine = Memory;
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create table s(a Nullable(Int64), b Nullable(Int64), c Nullable(String)) engine = Memory;
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insert into t values(1,1,'a'), (2,2,'b');
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insert into s values(1,1,'a');
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select * from t left join s on t.a = s.a;
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select * from t left join s on t.a = s.a and t.a = s.b;
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select * from t left join s on t.a = s.a where s.a = 1;
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select * from t left join s on t.a = s.a and t.a = s.a;
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select * from t left join s on t.a = s.a and t.b = s.a;
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drop table t;
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drop table s;
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