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# Copyright 2002-2007 Interchange Development Group and others
# Copyright 1996-2002 Red Hat, Inc.
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version. See the LICENSE file for details.
# $Id: pgbooln.filter,v 1.6 2007-03-30 23:40:45 pajamian Exp $
CodeDef pgbooln Filter
CodeDef pgbooln Description PostgreSQL Boolean (undef as NULL)
CodeDef pgbooln Visibility private
CodeDef pgbooln Routine <<EOR
sub {
my $val = shift;
return if ! defined($val);
$val =~ s/\s+//g;
return 'f' if $val =~ /^(?:0|f(?:alse)?)?$/i;
return 't';
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