dbix::searchbuilder::unique(3pm) [debian man page]
DBIx::SearchBuilder::Unique(3pm) User Contributed Perl Documentation DBIx::SearchBuilder::Unique(3pm)NAME
DBIx::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 v5.14.2 2011-07-28 DBIx::SearchBuilder::Unique(3pm)
Check Out this Related Man Page
DBIx::SearchBuilder::Handle::SQLite(3pm) User Contributed Perl Documentation DBIx::SearchBuilder::Handle::SQLite(3pm)NAME
DBIx::SearchBuilder::Handle::SQLite -- A SQLite specific Handle object
SYNOPSIS DESCRIPTION
This module provides a subclass of DBIx::SearchBuilder::Handle that compensates for some of the idiosyncrasies of SQLite.
METHODS
DatabaseVersion
Returns the version of the SQLite library which is used, e.g., "2.8.0". SQLite can only return short variant.
Insert
Takes a table name as the first argument and assumes that the rest of the arguments are an array of key-value pairs to be inserted.
If the insert succeeds, returns the id of the insert, otherwise, returns a Class::ReturnValue object with the error reported.
CaseSensitive
Returns undef, since SQLite's searches are not case sensitive by default
DistinctCount STATEMENTREF
takes an incomplete SQL SELECT statement and massages it to return a DISTINCT result count
SimpleDateTimeFunctions
Returns hash reference with specific date time functions of this database for "DateTimeFunction" in DBIx::SearchBuilder::Handle.
AUTHOR
Jesse Vincent, jesse@fsck.com
SEE ALSO perl(1), DBIx::SearchBuilder
perl v5.14.2 2011-09-21 DBIx::SearchBuilder::Handle::SQLite(3pm)
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