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feat(query): add topn runtime filter in native storage format #9738
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this PR introduces a new feature to the codebase
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Jan 26, 2023
BohuTANG
reviewed
Jan 27, 2023
Good idea. |
Unless we have prewhere and page index. |
BohuTANG
reviewed
Jan 27, 2023
Co-authored-by: BohuTANG <[email protected]>
BohuTANG
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Jan 27, 2023
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Summary
Summary about this PR
If we push down the sort + limit to storage level, we can have
TopN
opt.But it must work with runtime predication (prewhere) + Page index optimization , so currently we only have it in native storage format.
Query
select * from hits_page where URL like '%google%' order by EventTime desc limit 10;
can works 5 times faster.