BUG Report - Select distinct on

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POSTGRESQL BUG REPORT TEMPLATE
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Your name : Dirk Elmendorf
Your email address : delmendo(at)rackspace(dot)com

System Configuration
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Architecture (example: Intel Pentium) : Intel Pentium

Operating System (example: Linux 2.0.26 ELF) :RedHat Linux 6.1/ 2.2.12-20
PostgreSQL version (example: PostgreSQL-6.5.1): PostgreSQL-7.0
Compiler used (example: gcc 2.8.0) : egcs-2.9.66

Please enter a FULL description of your problem:
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Can not use the select distinct sql statement.

Please describe a way to repeat the problem. Please try to provide a
concise reproducible example, if at all possible:
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create table test
(
label text
);

select distinct on label label from test;

ERROR:parser: parse error at or near "label";
select label from test;
label
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(0 rows)

If you know how this problem might be fixed, list the solution below:
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______________________________________________________________________
Dirk Elmendorf, CTE Main: 210-892-4000
Rackspace,Ltd. Direct: 210-892-4005
Weston Center Fax: 210-892-4329
112 East Pecan, Suite 600 Email:delmendo(at)rackspace(dot)com
San Antonio, TX 78205 <http://www.rackspace.com>