ORM Solution for really complex queries

Question

Can/should One use any ORM Solution is a Complex Situation like this ? can this even be done with Propel or Doctrine ? at the moment I am using Propel. So I'd be glad If there is Propel solution for it.
If I do a direct query with propel what are the suggestion ?

SELECT I.*,((I.width*175)/I.height) as relativeWidth FROM 
(SELECT * FROM Image WHERE owner = 1 LIMIT 5, 10) I
order by relativeWidth asc

and additionally What is the standard solution for the scenario where one needs to exequte really complex queries in most of the places in the application ?

There is a LIMIT 5, 10 that I use for Pagination. and its in inner Query. If its in View how can I control Pagination ?

Answer 1

Your query can be written as following with Propel 1.6.3:

<?php

// SELECT * FROM Image WHERE owner = 1 LIMIT 5, 10
$subQuery = ImageQuery::create()
    ->filterByOwner(1)
    ->limit(10)
    ->offset(5)
    ;

$query = ImageQuery::create()
    ->addSelectQuery($subQuery, 'I', true)
    ->withColumn('((I.WIDTH*175)/I.HEIGHT)', 'relativeWidth') // ((I.width*175)/I.height) as relativeWidth
    ->orderBy('relativeWidth') // default is 'asc'
    ;

$params = array();
var_dump(\BasePeer::createSelectSql($query, $params));

Output is:

SELECT I.ID, I.WIDTH, I.HEIGHT, I.OWNER, ((I.WIDTH*175)/I.HEIGHT) AS relativeWidth
FROM (
    SELECT image.ID, image.WIDTH, image.HEIGHT, image.OWNER
    FROM `image`
    WHERE image.OWNER=:p1 LIMIT 5, 10
) AS I
ORDER BY relativeWidth ASC

Note the :p1 is the binding parameter related to the owner value.

So it's really easy to create complex queries using Propel :)

William