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Doc: clarify that DROP ... CASCADE is recursive.

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Apparently that's not obvious to everybody, so let's belabor the point.

In passing, document that DROP POLICY has CASCADE/RESTRICT options (which
it does, per gram.y) but they do nothing (I assume, anyway).  Also update
some long-obsolete commentary in gram.y.

Discussion: <20160805104837.1412.84915@wrigleys.postgresql.org>
This commit is contained in:
Tom Lane
2016-08-12 18:45:18 -04:00
parent 4b234fd8bf
commit 4997878193
35 changed files with 144 additions and 48 deletions
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4
doc/src/sgml/ref/drop_language.sgml
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@ -74,7 +74,9 @@ DROP [ PROCEDURAL ] LANGUAGE [ IF EXISTS ] <replaceable class="PARAMETER">name</
<listitem>
<para>
Automatically drop objects that depend on the language (such as
functions in the language).
functions in the language),
and in turn all objects that depend on those objects
(see <xref linkend="ddl-depend">).
</para>
</listitem>
</varlistentry>