ClickHouse/tests/performance/duplicate_order_by_and_distinct.xml

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XML

<test>
<settings><max_threads>1</max_threads></settings>
<!-- FIXME this should have been an EXPLAIN test, no point in measuring performance to deduce that the query was rewritten -->
<query>SELECT * FROM (SELECT CounterID, EventDate FROM hits_10m_single ORDER BY CounterID DESC) ORDER BY EventDate, CounterID FORMAT Null</query>
<query>SELECT DISTINCT * FROM (SELECT DISTINCT CounterID, EventDate FROM hits_10m_single) FORMAT Null</query>
<query>SELECT DISTINCT * FROM (SELECT DISTINCT CounterID, EventDate FROM hits_10m_single ORDER BY CounterID DESC) ORDER BY toStartOfWeek(EventDate) FORMAT Null</query>
</test>