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Konstantin BogdanovandClaude Fable 5
5966d52be2
Add queries for the cases raised in review of #104859: `ORDER BY` as a single-column subset of `GROUP BY`, `GROUP BY` columns permuted relative to the table sorting key, and a permuted `GROUP BY` with an extra non-key column combined with a subset `ORDER BY`. Related: https://github.com/ClickHouse/ClickHouse/pull/104859#discussion_r3578587811 Co-Authored-By: Claude Fable 5 <[email protected]>
33 lines
1.9 KiB
XML
33 lines
1.9 KiB
XML
<test>
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<!-- GROUP BY primary key column ORDER BY the same key LIMIT N.
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Exercises the aggregation-in-order limit push-down optimization:
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early termination after producing enough groups. -->
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<settings>
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<optimize_aggregation_in_order>1</optimize_aggregation_in_order>
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</settings>
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<!-- GROUP BY first PK column, ORDER BY same, small LIMIT -->
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<query>SELECT CounterID, count() FROM hits_100m_single GROUP BY CounterID ORDER BY CounterID ASC LIMIT 10 FORMAT Null</query>
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<!-- Same with larger LIMIT -->
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<query>SELECT CounterID, count() FROM hits_100m_single GROUP BY CounterID ORDER BY CounterID ASC LIMIT 100 FORMAT Null</query>
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<!-- GROUP BY two-column PK prefix -->
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<query>SELECT CounterID, EventDate, count() FROM hits_100m_single GROUP BY CounterID, EventDate ORDER BY CounterID, EventDate LIMIT 10 FORMAT Null</query>
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<!-- ORDER BY is a prefix of GROUP BY (GROUP BY has extra non-PK column) -->
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<query>SELECT CounterID, EventDate, RegionID, count() FROM hits_100m_single GROUP BY CounterID, EventDate, RegionID ORDER BY CounterID, EventDate LIMIT 10 FORMAT Null</query>
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<!-- ORDER BY is a single-column subset of a multi-column GROUP BY -->
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<query>SELECT CounterID, EventDate, count() FROM hits_100m_single GROUP BY CounterID, EventDate ORDER BY CounterID LIMIT 10 FORMAT Null</query>
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<!-- GROUP BY columns permuted relative to the sorting key: the group-by keys
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are matched as a set against the table sorting key, so the push-down
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still applies -->
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<query>SELECT CounterID, EventDate, count() FROM hits_100m_single GROUP BY EventDate, CounterID ORDER BY CounterID, EventDate LIMIT 10 FORMAT Null</query>
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<!-- Permuted GROUP BY with an extra non-PK column, ORDER BY a subset -->
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<query>SELECT CounterID, EventDate, RegionID, count() FROM hits_100m_single GROUP BY RegionID, EventDate, CounterID ORDER BY CounterID, EventDate LIMIT 10 FORMAT Null</query>
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</test>
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