ClickHouse/dbms/tests/performance/simple_join_query.xml

<test>
    <type>loop</type>

    <stop_conditions>
        <all_of>
            <total_time_ms>30000</total_time_ms>
        </all_of>
        <any_of>
            <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>