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Push limit through subqueries to underlying sort, where possible.

author Robert Haas <rhaas@postgresql.org>

2017年8月21日 18:43:01 +0000 (14:43 -0400)

committer Robert Haas <rhaas@postgresql.org>

2017年8月21日 18:19:44 +0000 (14:19 -0400)

commit 1f6d515a67ec98194c23a5db25660856c9aab944

tree 11ea85be0cf33a654d1578baf13530422cf938e3 tree

parent 79ccd7cbd5ca44bee0191d12e9e65abf702899e7 commit | diff

Push limit through subqueries to underlying sort, where possible.

Douglas Doole, reviewed by Ashutosh Bapat and by me. Minor formatting
change by me.

Discussion: http://postgr.es/m/CADE5jYLuugnEEUsyW6Q_4mZFYTxHxaVCQmGAsF0yiY8ZDggi-w@mail.gmail.com

src/backend/executor/nodeLimit.c diff | blob | blame | history

src/test/regress/expected/subselect.out diff | blob | blame | history

src/test/regress/sql/subselect.sql diff | blob | blame | history

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