mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-19 14:11:58 +00:00
20 lines
610 B
MySQL
20 lines
610 B
MySQL
|
use test;
|
||
|
|
|
||
|
|
drop table if exists t;
|
||
|
|
drop table if exists s;
|
||
|
|
|
||
|
|
create table t(a Nullable(Int64), b Nullable(Int64), c Nullable(String)) engine = Memory;
|
||
|
|
create table s(a Nullable(Int64), b Nullable(Int64), c Nullable(String)) engine = Memory;
|
||
|
|
|
||
|
|
insert into t values(1,1,'a'), (2,2,'b');
|
||
|
|
insert into s values(1,1,'a');
|
||
|
|
|
||
|
|
select * from t left join s on t.a = s.a;
|
||
|
|
select * from t left join s on t.a = s.a and t.a = s.b;
|
||
|
|
select * from t left join s on t.a = s.a where s.a = 1;
|
||
|
|
select * from t left join s on t.a = s.a and t.a = s.a;
|
||
|
|
select * from t left join s on t.a = s.a and t.b = s.a;
|
||
|
|
|
||
|
|
drop table t;
|
||
|
|
drop table s;
|