ClickHouse/tests/performance/removing_group_by_keys.xml

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<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>