DBIx::SearchBuilder::UUsereContributed Perl DocuDBIx::SearchBuilder::Unique(3)NAMEDBIx::SearchBuilder::Unique - Ensure uniqueness of records in a
collection
SYNOPSIS
package Foo::Collection;
use base 'DBIx::SearchBuilder';
use DBIx::SearchBuilder::Unique; # mixin
my $collection = Foo::Collection->New();
$collection->SetupComplicatedJoins;
$collection->OrderByMagic;
while (my $thing = $collection->Next) {
# $thing is going to be distinct
}
DESCRIPTION
Currently, DBIx::SearchBuilder makes exceptions for databases which
cannot handle both "SELECT DISTINCT" and ordering in the same
statement; it drops the "DISTINCT" requirement. This, of course, means
that you can get the same row twice, which you might not want. If
that's the case, use this module as a mix-in, and it will provide you
with an "AddRecord" method which ensures that a record will not appear
twice in the same search.
AUTHOR
Simon Cozens.
COPYRIGHT
Copyright 2005 Best Practical Solutions, LLC
This library is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.
perl v5.18.2 2013-01-02 DBIx::SearchBuilder::Unique(3)