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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/alter_foreign_table.sgml
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@@ -431,7 +431,9 @@ ALTER FOREIGN TABLE [ IF EXISTS ] <replaceable class="PARAMETER">name</replaceab
<listitem>
<para>
Automatically drop objects that depend on the dropped column
or constraint (for example, views referencing the column).
or constraint (for example, views referencing the column),
and in turn all objects that depend on those objects
(see <xref linkend="ddl-depend">).
</para>
</listitem>
</varlistentry>