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doc: PG 12 relnotes, add mention of single-child optimization

2019年6月14日 13:30:31 +0000 (09:30 -0400)

committer Bruce Momjian <bruce@momjian.us>

2019年6月14日 13:30:31 +0000 (09:30 -0400)

Add mention of single-child optimization for partitions and UNION ALL.

Reported-by: David Rowley
Discussion: https://postgr.es/m/CAKJS1f8R8riwBXw==7ijV=UZNuhP+3qXgDBKSiM+=_cTf4mXXw@mail.gmail.com

doc/src/sgml/release-12.sgml patch | blob | blame | history

diff --git a/doc/src/sgml/release-12.sgml b/doc/src/sgml/release-12.sgml

index 76abc95b128f2f404e0909f8e9fd052d960e927a..aa3845f5dde8b3b7dc4345de55e652edd6446810 100644 (file)

--- a/doc/src/sgml/release-12.sgml

+++ b/doc/src/sgml/release-12.sgml

@@ -842,6 +842,18 @@ Author: Tom Lane <tgl@sss.pgh.pa.us>

<!--

Author: Tom Lane <tgl@sss.pgh.pa.us>

+2019年03月25日 [8edd0e794] Suppress Append and MergeAppend plan nodes that have a s

+-->

+ <para>

+ Improve optimization of partition and <literal>UNION ALL</literal>

+ queries that have only a single child (David Rowley)

+ </para>

+ </listitem>

+ <listitem>

+<!--

+Author: Tom Lane <tgl@sss.pgh.pa.us>

2018年12月13日 [04fe805a1] Drop no-op CoerceToDomain nodes from expressions at plan

-->

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