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Add 307 release notes #582

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merged 1 commit into from Apr 4, 2019

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electrum commented Apr 3, 2019

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@cla-bot cla-bot bot added the cla-signed label Apr 3, 2019

@electrum electrum force-pushed the electrum:release branch 3 times, most recently from 8655311 to a139d1c Apr 3, 2019

@dain

dain approved these changes Apr 3, 2019

@electrum electrum force-pushed the electrum:release branch from a139d1c to 7efc1b5 Apr 4, 2019

@electrum electrum merged commit 7efc1b5 into prestosql:master Apr 4, 2019

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@electrum electrum deleted the electrum:release branch Apr 4, 2019

* Optimize queries containing ``ORDER BY`` together with ``LIMIT`` over an ``OUTER JOIN``
by pushing ``ORDER BY`` and ``LIMIT`` to the outer side of the join. (:issue:`419`)
* Improve performance of table scans for data sources that produce tiny pages. (:issue:`467`)
* Improve performance of ``IN`` subquery expressions by removing distinct aggregations. (:issue:`551`)

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@martint

martint Apr 4, 2019

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This should be “Improve performance of IN subquery expressions that contain a DISTINCT clause”

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