Re: DBIx::Class Query Help

[anonymized user 468275]

You can reduce this to a single query by filtering the groups returned by GROUP BY with a HAVING clause, i.e.

SELECT project_id, chart_id, SUM(amount)
        FROM ($sql) self
       GROUP BY project_id, chart_id
       HAVING SUM(amount) != 0

[duelafn]

Ah, fabulous that does help a lot. Aside from having to remove duplicates in perl, the following does exactly what I was after:

sub accounts {
  my $self = shift;
  my $rs = $self->search({},
           { select   => ["project_id", "chart.accno", "chart.descript
+ion", "SUM(amount)"],
             as       => ["project_id", "accno", "description", "bal"]
+,
             group_by => ["project_id", "chart.accno", "chart.descript
+ion"],
             having   => { 'SUM(amount)' => { '!=', 0 } },
             join     => [ "chart" ],
           });
  $rs->result_class('DBIx::Class::ResultClass::HashRefInflator');
  unique map "$$_{accno} - $$_{description}", $rs->all;
}