From: Peter Eisentraut <peter@eisentraut.org>
To: pgsql-committers@lists.postgresql.org
Subject: pgsql: Expand virtual generated columns in constraint expressions
Date: Mon, 15 Sep 2025 14:33:21 +0000
Message-ID: <E1uyAGe-000qR4-36@gemulon.postgresql.org> (raw)
Expand virtual generated columns in constraint expressions
Virtual generated columns in constraint expressions need to be
expanded because the optimizer matches these expressions to qual
clauses. Failing to do so can cause us to miss opportunities for
constraint exclusion.
Author: Richard Guo <guofenglinux@gmail.com>
Discussion: https://www.postgresql.org/message-id/flat/204804c0-798f-4c72-bd1f-36116024fda3%40eisentraut.org
Branch
------
REL_18_STABLE
Details
-------
https://git.postgresql.org/pg/commitdiff/e7a2bbdb522dd6fc7283550742b8b52605198783
Modified Files
--------------
src/backend/optimizer/util/plancat.c | 9 +++++++++
src/test/regress/expected/generated_virtual.out | 23 +++++++++++++++++++++++
src/test/regress/sql/generated_virtual.sql | 15 +++++++++++++++
3 files changed, 47 insertions(+)
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To: pgsql-committers@postgresql.org
Cc: peter@eisentraut.org, pgsql-committers@lists.postgresql.org
Subject: Re: pgsql: Expand virtual generated columns in constraint expressions
In-Reply-To: <E1uyAGe-000qR4-36@gemulon.postgresql.org>
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