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DROP objecttype IF EXISTS for the following objects:

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table view index sequence schema type domain conversion
This commit is contained in:
Andrew Dunstan
2005-11-19 17:39:45 +00:00
parent 8ef289dba1
commit daea4d8eae
22 changed files with 436 additions and 81 deletions
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18
doc/src/sgml/ref/drop_sequence.sgml
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@@ -1,5 +1,5 @@
<!--
$PostgreSQL: pgsql/doc/src/sgml/ref/drop_sequence.sgml,v 1.23 2005/11/01 21:09:50 tgl Exp $
$PostgreSQL: pgsql/doc/src/sgml/ref/drop_sequence.sgml,v 1.24 2005/11/19 17:39:44 adunstan Exp $
PostgreSQL documentation
-->
@@ -20,7 +20,7 @@ PostgreSQL documentation
<refsynopsisdiv>
<synopsis>
DROP SEQUENCE <replaceable class="PARAMETER">name</replaceable> [, ...] [ CASCADE | RESTRICT ]
DROP SEQUENCE [ IF EXISTS ] <replaceable class="PARAMETER">name</replaceable> [, ...] [ CASCADE | RESTRICT ]
</synopsis>
</refsynopsisdiv>
@@ -36,6 +36,16 @@ DROP SEQUENCE <replaceable class="PARAMETER">name</replaceable> [, ...] [ CASCAD
<title>Parameters</title>
<variablelist>
<varlistentry>
<term><literal>IF EXISTS</literal></term>
<listitem>
<para>
Do not throw an error if the sequence does not exist. A notice is issued
in this case.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><replaceable class="PARAMETER">name</replaceable></term>
<listitem>
@@ -84,7 +94,9 @@ DROP SEQUENCE serial;
<para>
<command>DROP SEQUENCE</command> conforms to the <acronym>SQL</acronym>
standard, except that the standard only allows one
sequence to be dropped per command.
sequence to be dropped per command, and apart from the
<literal>IF EXISTS</> option, which is a <productname>PostgreSQL</>
extension.
</para>
</refsect1>