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Add documentation about the inability of plpsql to use parameter names

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that are the same as column names used in the function.
This commit is contained in:
Bruce Momjian 2005-12-08 18:02:04 +00:00
parent 4ebd4224a5
commit dc1cb4ceb9
1 changed files with 14 additions and 4 deletions
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18
doc/src/sgml/plpgsql.sgml
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@ -1,5 +1,5 @@
<!-- <!--
$PostgreSQL: pgsql/doc/src/sgml/plpgsql.sgml,v 1.81 2005/12/01 10:36:57 neilc Exp $ $PostgreSQL: pgsql/doc/src/sgml/plpgsql.sgml,v 1.82 2005/12/08 18:02:04 momjian Exp $
--> -->
<chapter id="plpgsql"> <chapter id="plpgsql">
@ -3094,6 +3094,15 @@ AFTER INSERT OR UPDATE OR DELETE ON sales_fact
</para> </para>
</listitem> </listitem>
<listitem>
<para>
You cannot use parameter names that are the same as columns
that are referenced in the function. Oracle allows you to do this
if you qualify the parameter name using
<literal>function_name.paramater_name</>.
</para>
</listitem>
<listitem> <listitem>
<para> <para>
You can overload function names in <productname>PostgreSQL</>. This is You can overload function names in <productname>PostgreSQL</>. This is
@ -3111,7 +3120,7 @@ AFTER INSERT OR UPDATE OR DELETE ON sales_fact
<listitem> <listitem>
<para> <para>
In <productname>PostgreSQL</> the function body has to be written as In <productname>PostgreSQL</> the function body must be written as
a string literal. Therefore you need to use dollar quoting or escape a string literal. Therefore you need to use dollar quoting or escape
single quotes in the function body. See <xref single quotes in the function body. See <xref
linkend="plpgsql-quote-tips">. linkend="plpgsql-quote-tips">.
@ -3128,10 +3137,11 @@ AFTER INSERT OR UPDATE OR DELETE ON sales_fact
<listitem> <listitem>
<para> <para>
Since there are no packages, there are no package-level variables Since there are no packages, there are no package-level variables
either. This is somewhat annoying. You may be able to keep per-session either. This is somewhat annoying. You can keep per-session state
state in temporary tables, instead. in temporary tables instead.
</para> </para>
</listitem> </listitem>
</itemizedlist> </itemizedlist>
</para> </para>