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40 lines
1.4 KiB
SQL
40 lines
1.4 KiB
SQL
DROP TABLE IF EXISTS using1;
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DROP TABLE IF EXISTS using2;
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CREATE TABLE using1(a UInt8, b UInt8) ENGINE=Memory;
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CREATE TABLE using2(a UInt8, b UInt8) ENGINE=Memory;
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INSERT INTO using1 VALUES (1, 1) (2, 2) (3, 3);
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INSERT INTO using2 VALUES (4, 4) (2, 2) (3, 3);
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SELECT * FROM using1 ALL LEFT JOIN (SELECT * FROM using2) js2 USING (a, a, a, b, b, b, a, a) ORDER BY a;
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DROP TABLE using1;
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DROP TABLE using2;
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--
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drop table if exists persons;
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drop table if exists children;
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create table persons (id String, name String) engine MergeTree order by id;
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create table children (id String, childName String) engine MergeTree order by id;
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insert into persons (id, name)
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values ('1', 'John'), ('2', 'Jack'), ('3', 'Daniel'), ('4', 'James'), ('5', 'Amanda');
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insert into children (id, childName)
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values ('1', 'Robert'), ('1', 'Susan'), ('3', 'Sarah'), ('4', 'David'), ('4', 'Joseph'), ('5', 'Robert');
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select * from persons all inner join children using id;
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select * from persons all inner join (select * from children) as j using id;
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select * from (select * from persons) as s all inner join (select * from children ) as j using id;
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--
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set subquery_requires_alias = 0;
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select * from persons all inner join (select * from children) using id;
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select * from (select * from persons) all inner join (select * from children) using id;
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select * from (select * from persons) as s all inner join (select * from children) using id;
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drop table persons;
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drop table children;
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