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Add ALTER .. NO DEPENDS ON

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Commit f2fcad27d5 (9.6 era) added the ability to mark objects as
dependent an extension, but forgot to add a way for such dependencies to
be removed.  This commit fixes that oversight.

Strictly speaking this should be backpatched to 9.6, but due to lack of
demand we're not doing so at this time.

Discussion: https://postgr.es/m/20200217225333.GA30974@alvherre.pgsql
Reviewed-by: ahsan hadi <ahsan.hadi@gmail.com>
Reviewed-by: Ibrar Ahmed <ibrar.ahmad@gmail.com>
Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us>
This commit is contained in:
Alvaro Herrera
2020-04-20 13:42:12 -04:00
parent 4157f73b4b
commit 5fc703946b
13 changed files with 168 additions and 36 deletions
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9
doc/src/sgml/ref/alter_index.sgml
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@@ -100,11 +100,14 @@ ALTER INDEX ALL IN TABLESPACE <replaceable class="parameter">name</replaceable>
</varlistentry>
<varlistentry>
<term><literal>DEPENDS ON EXTENSION</literal></term>
<term><literal>DEPENDS ON EXTENSION <replaceable class="parameter">extension_name</replaceable></literal></term>
<term><literal>NO DEPENDS ON EXTENSION <replaceable class="parameter">extension_name</replaceable></literal></term>
<listitem>
<para>
This form marks the index as dependent on the extension, such that if the
extension is dropped, the index will automatically be dropped as well.
This form marks the index as dependent on the extension, or no longer
dependent on that extension if <literal>NO</literal> is specified.
An index that's marked as dependent on an extension is automatically
dropped when the extension is dropped.
</para>
</listitem>
</varlistentry>