On 12 February 2015 at 14:27, Hartmaier Alexander
<alexander.hartma...@t-systems.at> wrote:
> I'd additinally restrict the columns returned to the pk columns to save
> bytes going over the wire and using HRI to not instantiate a result object.
>
> Looks like a nice addition to DBIC::Helpers!
>
Looks like already there: DBIx::Class::Helper::ResultSet::Shortcut::HasRows
>
> On 2015-02-12 08:22, QE :: Felix Ostmann wrote:
>
> We are using this function in our ResultSet.pm:
>
> sub exists {
> my ($self, $query) = @_;
>
> return $self->search($query, { rows => 1, select => [\1] })->single;
> }
>
>
> Have a nice day
> Felix
>
>
> 2015-02-12 1:05 GMT+01:00 Charlie Garrison <garri...@zeta.org.au>:
>>
>> Good morning,
>>
>> On 11/2/15 at 10:58 PM +0100, Ekki Plicht (DF4OR) <e...@plicht.de> wrote:
>>
>> >I am thinking of setting up a special resultset which contains only
>> >the key as a returned value by SELECT, but I am wondering if there is
>> >a faster method.
>>
>> Put a method in your ResultSet class, eg:
>>
>> sub key_exists {
>> my ($self, $key) = @_;
>> my $row = $self->find( $key );
>> return $row ? 1 : 0;
>> }
>>
>>
>> Elsewhere:
>>
>> my $got_row = $schema->resultset('RSClass')->key_exists($key);
>>
>>
>> Charlie
>>
>> --
>> Charlie Garrison <garri...@zeta.org.au>
>> github.com/cngarrison metacpan.org/author/CNG
>>
>> O< ascii ribbon campaign - stop html mail
>> http://www.ietf.org/rfc/rfc1855.txt
>>
>>
>> _______________________________________________
>> List: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/dbix-class
>> IRC: irc.perl.org#dbix-class
>> SVN: http://dev.catalyst.perl.org/repos/bast/DBIx-Class/
>> Searchable Archive:
>> http://www.grokbase.com/group/dbix-class@lists.scsys.co.uk
>
>
>
>
> _______________________________________________
> List: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/dbix-class
> IRC: irc.perl.org#dbix-class
> SVN: http://dev.catalyst.perl.org/repos/bast/DBIx-Class/
> Searchable Archive:
> http://www.grokbase.com/group/dbix-class@lists.scsys.co.uk
>
>
>
>
> *"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*
> T-Systems Austria GesmbH Rennweg 97-99, 1030 Wien
> Handelsgericht Wien, FN 79340b
> *"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*
> Notice: This e-mail contains information that is confidential and may be
> privileged.
> If you are not the intended recipient, please notify the sender and then
> delete this e-mail immediately.
> *"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*"*
>
> _______________________________________________
> List: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/dbix-class
> IRC: irc.perl.org#dbix-class
> SVN: http://dev.catalyst.perl.org/repos/bast/DBIx-Class/
> Searchable Archive:
> http://www.grokbase.com/group/dbix-class@lists.scsys.co.uk
--
//wbr, Dmitry L.
_______________________________________________
List: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/dbix-class
IRC: irc.perl.org#dbix-class
SVN: http://dev.catalyst.perl.org/repos/bast/DBIx-Class/
Searchable Archive: http://www.grokbase.com/group/dbix-class@lists.scsys.co.uk
