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release notes: add two optimizer items

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Report by Tom Lane
This commit is contained in:
Bruce Momjian 2015-06-12 21:47:08 -04:00
parent 2271d002d5
commit 89fe9bfc4e
1 changed files with 15 additions and 0 deletions
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doc/src/sgml/release-9.5.sgml
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@ -240,6 +240,21 @@
</para> </para>
</listitem> </listitem>
<listitem>
<para>
Allow the optimizer to remove unnecessary references to left
outer join subqueries (David Rowley)
</para>
</listitem>
<listitem>
<para>
Allow pushdown of query restrictions into <link
linkend="functions-window">window functions</>, where appropriate
(David Rowley)
</para>
</listitem>
<listitem> <listitem>
<para> <para>
Speed up <acronym>CRC</> (cyclic redundancy check) computations Speed up <acronym>CRC</> (cyclic redundancy check) computations