ClickHouse/dbms/tests/performance/simple_join_query.xml

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<test>
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<type>loop</type>
<stop_conditions>
<all_of>
<total_time_ms>30000</total_time_ms>
</all_of>
<any_of>
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<average_speed_not_changing_for_ms>6000</average_speed_not_changing_for_ms>
<total_time_ms>60000</total_time_ms>
</any_of>
</stop_conditions>
<main_metric>
<total_time />
</main_metric>
<create_query>CREATE TABLE join_table(A Int64, S0 String, S1 String, S2 String, S3 String)ENGINE = MergeTree ORDER BY A</create_query>
<fill_query>INSERT INTO join_table SELECT number AS A, toString(arrayMap(x->x, range(100))) S0, S0 AS S1, S0 AS S2, S0 AS S3 from numbers(500000)</fill_query>
<query tag='UsingJoinWithoutSubquery'>SELECT COUNT() FROM join_table LEFT JOIN join_table USING A</query>
<query tag='UsingJoinWithSubquery'>SELECT COUNT() FROM join_table LEFT JOIN (SELECT A FROM join_table) USING A</query>
<query tag='OnExpressionJoinWithoutSubquery'>SELECT COUNT() FROM join_table AS left LEFT JOIN join_table AS right ON left.A = right.A</query>
<query tag='OnExpressionJoinWithoutSubquery'>SELECT COUNT() FROM join_table AS left LEFT JOIN (SELECT A FROM join_table) AS right ON left.A = right.A</query>
<drop_query>DROP TABLE IF EXISTS join_table</drop_query>
</test>