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<!--
$Header: /cvsroot/pgsql/doc/src/sgml/ref/Attic/current_user.sgml,v 1.7 2002/08/13 20:40:43 momjian Exp $
PostgreSQL documentation
-->
<REFENTRY ID="SQL-CURRENT-USER">
<REFMETA>
<REFENTRYTITLE>CURRENT_USER</REFENTRYTITLE>
<REFMISCINFO>SQL - Functions</REFMISCINFO>
</REFMETA>
<REFNAMEDIV>
<REFNAME>
CURRENT_USER
</REFNAME>
<REFPURPOSE>
Returns the current user name
</REFPURPOSE>
<REFSYNOPSISDIV>
<REFSYNOPSISDIVINFO>
<DATE>1998-04-15</DATE>
</REFSYNOPSISDIVINFO>
<SYNOPSIS>
CURRENT_USER
</SYNOPSIS>
<REFSECT2 ID="R2-SQL-CURRENT-USER-1">
<REFSECT2INFO>
<DATE>1998-04-15</DATE>
</REFSECT2INFO>
<TITLE>
Inputs
</TITLE>
<PARA>
None.
</REFSECT2>
<REFSECT2 ID="R2-SQL-CURRENT-USER-2">
<REFSECT2INFO>
<DATE>1998-04-15</DATE>
</REFSECT2INFO>
<TITLE>
Outputs
</TITLE>
<PARA>
<VARIABLELIST>
<VARLISTENTRY>
<TERM>
<replaceable>username</replaceable>
</TERM>
<LISTITEM>
<PARA>
The name of the current user.
</VARIABLELIST>
</REFSECT2>
</REFSYNOPSISDIV>
<REFSECT1 ID="R1-SQL-CURRENT-USER-1">
<REFSECT1INFO>
<DATE>1998-04-15</DATE>
</REFSECT1INFO>
<TITLE>
Description
</TITLE>
<PARA>
The niladic CURRENT_USER function returns a string of type "name"
whose value represents a user name identification.
</PARA>
<REFSECT2 ID="R2-SQL-CURRENT-USER-3">
<REFSECT2INFO>
<DATE>1998-04-15</DATE>
</REFSECT2INFO>
<TITLE>
Notes
</TITLE>
<PARA>
Data type "name" is a non-standard 63-character type for storing
system identifiers.
</PARA>
</REFSECT2>
<REFSECT1 ID="R1-SQL-CURRENT-USER-2">
<TITLE>
Usage
</TITLE>
<PARA>
Display CURRENT_USER
</PARA>
<ProgramListing>
SELECT CURRENT_USER AS who_am_i;
who_am_i
------------
jose
</ProgramListing>
</REFSECT1>
<REFSECT1 ID="R1-SQL-CURRENT-USER-3">
<TITLE>
Compatibility
</TITLE>
<PARA>
</PARA>
<REFSECT2 ID="R2-SQL-CURRENT-USER-4">
<REFSECT2INFO>
<DATE>1998-04-15</DATE>
</REFSECT2INFO>
<TITLE>
SQL92
</TITLE>
<PARA>
SQL92 specifies some additional niladic USER functions:
</PARA>
<variablelist>
<varlistentry>
<term>CURRENT_USER / USER</term>
<listitem>
<para>
USER is a synonym for CURRENT_USER.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term>SESSION_USER</term>
<listitem>
<para>
The SESSION_USER function returns the SQL-session user name.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term>SYSTEM_USER</term>
<listitem>
<para>
The SYSTEM_USER function returns the database's initial default user.
</para>
</listitem>
</varlistentry>
</variablelist>
<para>
A niladic USER function returns a SQL_TEXT character string whose
value represents a user name.
</para>
</refsect2>
</refsect1>
</REFENTRY>
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