What is the DBIx::Class syntax for the CASE WHEN ... THEN SQL syntax?

Question

Does anyone know what's the DBIx::Class equivalent of an SQL query such as:

SELECT cdr_id,
CASE WHEN service_id = 'GPRS' THEN 'KB' WHEN service_id = 'SMS' THEN 'SMS' END AS unit
FROM ...

Thanks

Answer 1

my $rs = $schema->resultset( 'table' )->
    search_rs( {} ,
               { '+columns' => {
                     unit => 
                         \do { "CASE WHEN me.service_id='GPRS' THEN 'KB' " .
                                "WHEN me.service_id='SMS' THEN 'SMS' END" }
               } ) ;

Something along this line should work.