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doc: Reword ALTER TABLE ATTACH restriction on NO INHERIT constraints

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The previous wording is easy to read incorrectly; this change makes it
simpler, less ambiguous, and less prominent.

Backpatch to all live branches.

Reviewed-by: Amit Langote <amitlangote09@gmail.com>
Discussion: https://postgr.es/m/202411051201.zody6mld7vkw@alvherre.pgsql
This commit is contained in:
Álvaro Herrera 2024-11-07 14:06:24 +01:00
parent 0b022ddf3e
commit 344ac149cf
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1 changed files with 4 additions and 6 deletions
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doc/src/sgml/ref/alter_table.sgml
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@ -948,20 +948,18 @@ WITH ( MODULUS <replaceable class="parameter">numeric_literal</replaceable>, REM
<para> <para>
A partition using <literal>FOR VALUES</literal> uses same syntax for A partition using <literal>FOR VALUES</literal> uses same syntax for
<replaceable class="parameter">partition_bound_spec</replaceable> as <replaceable class="parameter">partition_bound_spec</replaceable> as
<link linkend="sql-createtable"><command>CREATE TABLE</command></link>. The partition bound specification <link linkend="sql-createtable"><command>CREATE TABLE</command></link>.
The partition bound specification
must correspond to the partitioning strategy and partition key of the must correspond to the partitioning strategy and partition key of the
target table. The table to be attached must have all the same columns target table. The table to be attached must have all the same columns
as the target table and no more; moreover, the column types must also as the target table and no more; moreover, the column types must also
match. Also, it must have all the <literal>NOT NULL</literal> and match. Also, it must have all the <literal>NOT NULL</literal> and
<literal>CHECK</literal> constraints of the target table. Currently <literal>CHECK</literal> constraints of the target table, not marked
<literal>NO INHERIT</literal>. Currently
<literal>FOREIGN KEY</literal> constraints are not considered. <literal>FOREIGN KEY</literal> constraints are not considered.
<literal>UNIQUE</literal> and <literal>PRIMARY KEY</literal> constraints <literal>UNIQUE</literal> and <literal>PRIMARY KEY</literal> constraints
from the parent table will be created in the partition, if they don't from the parent table will be created in the partition, if they don't
already exist. already exist.
If any of the <literal>CHECK</literal> constraints of the table being
attached are marked <literal>NO INHERIT</literal>, the command will fail;
such constraints must be recreated without the
<literal>NO INHERIT</literal> clause.
</para> </para>
<para> <para>