Question

My Sql skills are lacking and would really appreciate the help. What is the most efficient way to pull all records where a field is the same?

For example my tables name is ‘games’ and has an association with the table ‘consoles’

How do I pull all record of games with the same (duplicate) ‘name’, retain associations and be able to access all fields.

Basically modify this to just show duplicates:

$this->set('games', $this->Game->find('all', array('order' => array('Game.name' => 'asc'))));

Is there an easy way to do this using cake or how would I do it through sql using query()?

Much appreciated in advance!

Regards,
Ash

Answer 1

Tried to use Konerak query, it worked but only on small tables, on my test base with 2k records it crashed on sql client and gives a memory error on php (I used a non indexed field for testing). If it works for you:

$options = array();
$options['joins'][0]['table'] = 'games';
$options['joins'][0]['alias'] = 'Game2';
$options['joins'][0]['conditions'] = array(1 => 1);
$options['conditions'] = 'Game.name = Game2.name';
$options['conditions']['NOT'] = 'Game.id = Game2.id';
$options['order'] = 'Game.name ASC';

//$this->Game->contain();
$this->set('games', $this->Game->find('all', $options));

/*

This solutions use 2 queries but I managed to test it just fine:

$options = array();
$options['fields'] = 'Game.name';
$options['group'] = 'Game.name HAVING COUNT(*) > 1';

// get all the names > 1
//$this->Game->contain();
$regs = $this->Game->find('all', $options);

// make a nice array with them
$names = array();
foreach ($regs as $reg) {
$names[] = $reg['Game']['name'];
}

// and search for only those games
//$this->Game->contain();
$this->set('games', $this->Game->find('all', array(
                                     'conditions' => array('Game.name' => $names), 
                                     'order' => 'name ASC')));

Let me know if that won’t work for you and what problems you are having.

edit. I commented the contain lines. Seems you want all the structure so you wouldn’t need them anyway.

edit2. remove possible ambiguity on field names.