10000 doc: PG 12 relnotes, add mention of single-child optimization · postgrespro/postgres_cluster@b9a0724 · GitHub
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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
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‎doc/src/sgml/release-12.sgml

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@@ -842,6 +842,18 @@ Author: Tom Lane <tgl@sss.pgh.pa.us>
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<listitem>
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<!--
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Author: Tom Lane <tgl@sss.pgh.pa.us>
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2019-03-25 [8edd0e794] Suppress Append and MergeAppend plan nodes that have a s
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<para>
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Improve optimization of partition and <literal>UNION ALL</literal>
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queries that have only a single child (David Rowley)
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</para>
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</listitem>
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<listitem>
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<!--
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Author: Tom Lane <tgl@sss.pgh.pa.us>
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2018-12-13 [04fe805a1] Drop no-op CoerceToDomain nodes from expressions at plan
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-->
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