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docs for DROP ... IF EXISTS for the following cases:

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language, tablespace, trigger, rule, opclass, function, aggregate. operator, and cast.
This commit is contained in:
Andrew Dunstan
2006-06-16 22:27:55 +00:00
parent bac6570e78
commit e287fb27a5
9 changed files with 117 additions and 19 deletions
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15
doc/src/sgml/ref/drop_cast.sgml
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@@ -1,4 +1,4 @@
<!-- $PostgreSQL: pgsql/doc/src/sgml/ref/drop_cast.sgml,v 1.6 2003/11/29 19:51:38 pgsql Exp $ -->
<!-- $PostgreSQL: pgsql/doc/src/sgml/ref/drop_cast.sgml,v 1.7 2006/06/16 22:27:55 adunstan Exp $ -->
<refentry id="SQL-DROPCAST">
<refmeta>
@@ -17,7 +17,7 @@
<refsynopsisdiv>
<synopsis>
DROP CAST (<replaceable>sourcetype</replaceable> AS <replaceable>targettype</replaceable>) [ CASCADE | RESTRICT ]
DROP CAST [ IF EXISTS ] (<replaceable>sourcetype</replaceable> AS <replaceable>targettype</replaceable>) [ CASCADE | RESTRICT ]
</synopsis>
</refsynopsisdiv>
@@ -39,6 +39,17 @@ DROP CAST (<replaceable>sourcetype</replaceable> AS <replaceable>targettype</rep
<title>Parameters</title>
<variablelist>
<varlistentry>
<term><literal>IF EXISTS</literal></term>
<listitem>
<para>
Do not throw an error if the cast does not exist. A notice is issued
in this case.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><replaceable>sourcetype</replaceable></term>