ClickHouse/tests/performance/removing_group_by_keys.xml

<test>
    <preconditions>
        <table_exists>hits_10m_single</table_exists>
        <table_exists>hits_100m_single</table_exists>
    </preconditions>

    <query>SELECT avg(length(URL)) FROM hits_10m_single GROUP BY WatchID, CounterID FORMAT Null</query>
    <query>SELECT avg(length(URL)) FROM hits_10m_single GROUP BY WatchID, CounterID, WatchID - CounterID FORMAT Null</query>
</test>