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help / color / mirror / Atom feedFrom: Alexander Korotkov <akorotkov@postgresql.org>
To: pgsql-committers@lists.postgresql.org
Subject: pgsql: Fix SPLIT PARTITION hint for DEFAULT partition bounds
Date: Tue, 19 May 2026 10:55:08 +0000
Message-ID: <E1wPI6O-000GEr-2U@gemulon.postgresql.org> (raw)
Fix SPLIT PARTITION hint for DEFAULT partition bounds
When ALTER TABLE ... SPLIT PARTITION specifies a DEFAULT partition, the
explicit partitions do not need to cover the split partition's bound
exactly. They may cover only part of it, with the DEFAULT partition
covering the remaining range.
However, the existing hint said that the combined bounds of the new
partitions must exactly match the bound of the split partition, which is
misleading for this case and inconsistent with the code comment.
Fix the hint to state the actual requirement: explicit partition bounds
must stay within the bounds of the split partition when a DEFAULT
partition is specified.
Author: Chao Li <lic@highgo.com>
Reviewed-by: Alexander Korotkov <aekorotkov@gmail.com>
Discussion: https://postgr.es/m/C18878AB-DEB2-4A61-9995-A035DD644B81@gmail.com
Branch
------
master
Details
-------
https://git.postgresql.org/pg/commitdiff/971017c49599b6666029ca46ee00378d8836f336
Modified Files
--------------
src/backend/partitioning/partbounds.c | 14 ++++++--------
src/test/regress/expected/partition_split.out | 14 +++++++-------
2 files changed, 13 insertions(+), 15 deletions(-)
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To: pgsql-committers@postgresql.org
Cc: akorotkov@postgresql.org, pgsql-committers@lists.postgresql.org
Subject: Re: pgsql: Fix SPLIT PARTITION hint for DEFAULT partition bounds
In-Reply-To: <E1wPI6O-000GEr-2U@gemulon.postgresql.org>
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