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| author | Bruce Momjian <bruce@momjian.us> | 2019-06-14 09:30:31 -0400 |
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| committer | Bruce Momjian <bruce@momjian.us> | 2019-06-14 09:30:31 -0400 |
| commit | b9a0724cf7a3ecf19aaaa098ffd26e52bb800c5c (patch) | |
| tree | 6a7313b51503929bd454f05bae7854e7de2e95d7 | |
| parent | 08d2d58a2a1c8ef8d39e8132d39ee14a1d029500 (diff) | |
| download | postgresql-b9a0724cf7a3ecf19aaaa098ffd26e52bb800c5c.tar.gz postgresql-b9a0724cf7a3ecf19aaaa098ffd26e52bb800c5c.zip | |
doc: PG 12 relnotes, add mention of single-child optimization
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
| -rw-r--r-- | doc/src/sgml/release-12.sgml | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/doc/src/sgml/release-12.sgml b/doc/src/sgml/release-12.sgml index 76abc95b128..aa3845f5dde 100644 --- 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> <listitem> <!-- Author: Tom Lane <tgl@sss.pgh.pa.us> +2019-03-25 [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> 2018-12-13 [04fe805a1] Drop no-op CoerceToDomain nodes from expressions at plan --> |