How to make query joins in cakePHP? - php

Question

I just wanna ask how to make query joins in CakePHP following this SQL syntax
SELECT a.id, SUM( r.jumlah_realisasi) AS jumlah_realisasi, SUM(b.jumlah_budget) AS jumlah_budget, SUM(c.jumlah_contrapos)
FROM accountposts a
LEFT JOIN
(
SELECT accountpost_id, agency_id, SUM(budget_after_changes) AS jumlah_budget
FROM budgets
GROUP BY accountpost_id
) b
ON a.id = b.accountpost_id
LEFT JOIN
(
SELECT accountpost_id, agency_id, SUM(realisation_value) AS jumlah_realisasi
FROM realisations
GROUP BY accountpost_id
) r
ON a.id = r.accountpost_id
LEFT JOIN
(
SELECT accountpost_id, agency_id, SUM(contrapos_value) AS jumlah_contrapos
FROM contraposts
GROUP BY accountpost_id
) c
ON a.id = c.accountpost_id
GROUP BY
a.id
And I tried with this syntax (I use CakePHP 2.x):
$joins = array(
array(
'table' => 'budgets',
'alias' => 'Budget',
'type' => 'LEFT',
'conditions' => array('Accountpost.id = Budget.accountpost_id')
),
array(
'table' => 'realisations',
'alias' => 'Realisation',
'type' => 'LEFT',
'conditions' => array('Accountpost.id = Realisation.accountpost_id')
),
array(
'table' => 'contraposts',
'alias' => 'Contrapost',
'type' => 'LEFT',
'conditions' => array('Accountpost.id = Contrapost.accountpost_id')
),
);
$this->paginate = array(
'limit' => 60,
'joins' => $joins,
'fields' => array('Accountpost.id','Accountpost.explanation','Accountpost.account_code',
'SUM(Budget.budget_after_changes) AS jumlah_budget','SUM(Realisation.realisation_value) AS jumlah_realisasi','SUM(Contrapost.contrapos_value) AS jumlah_contrapos'),
'group' => array('Accountpost.id'),
'order' => array('Accountpost.id' => 'ASC'),
);
And here is the SQL Dump from CakePHP :
SELECT `Accountpost`.`id`, `Accountpost`.`explanation`, `Accountpost`.`account_code`, SUM(`Budget`.`budget_after_changes`), `Budget`.`budget_after_changes`, `Realisation`.`realisation_value`, `Contrapost`.`contrapos_value` FROM `realisasi_anggaran`.`accountposts` AS `Accountpost` LEFT JOIN `realisasi_anggaran`.`budgets` AS `Budget` ON (`Accountpost`.`id` = `Budget`.`accountpost_id`) LEFT JOIN `realisasi_anggaran`.`realisations` AS `Realisation` ON (`Accountpost`.`id` = `Realisation`.`accountpost_id`) LEFT JOIN `realisasi_anggaran`.`contraposts` AS `Contrapost` ON (`Accountpost`.`id` = `Contrapost`.`accountpost_id`) WHERE 1 = 1 GROUP BY `Accountpost`.`id` ORDER BY `Accountpost`.`id` ASC LIMIT 60
But the result is different between SQL syntax version and CakePHP version, in SQL syntax there is no duplicated values while examining SUM, but in CakePHP version there are duplicated values while examining SUM. How do I implement my SQL syntax to cakePHP the right way?

Answer 1

Your $options array is incorrectly constructed. This way the array has two nested, named keys called joins and Cake will not construct a correct SQL join.
The arrays should either look like this:
$joins = array(
array(
'table' => 'budgets',
'alias' => 'Budget',
'type' => 'LEFT',
'conditions' => array('Accountpost.id = Budget.accountpost_id')
)
);
$this->paginate = array(
'limit' => 60,
'joins' => $joins,
'fields' => array('Accountpost.id','Accountpost.explanation','Accountpost.account_code',
'SUM(Budget.budget_after_changes) AS jumlah_budget'),
'group' => array('Accountpost.id'),
'order' => array('Accountpost.id' => 'ASC'),
);
Or be constructed like the following:
$options = array(
'limit' => 60,
'fields' => array('Accountpost.id','Accountpost.explanation','Accountpost.account_code',
'SUM(Budget.budget_after_changes) AS jumlah_budget'),
'group' => array('Accountpost.id'),
'order' => array('Accountpost.id' => 'ASC'),
);
$options['joins'] = array(
array(
'table' => 'budgets',
'alias' => 'Budget',
'type' => 'LEFT',
'conditions' => array('Accountpost.id = Budget.accountpost_id')
)
);
$this->paginate = $options;