zend select query inside joinleft

Question

How to write SELECT query inside JOIN LEFT in a Zend model? for eg how to convert the following mysql query to zend model query

    LEFT JOIN 
    (SELECT count(*) as game_count,topic_id,time as g_time from games_list WHERE type < 3 GROUP BY topic_id) t3
    ON chapter_list.id=t3.topic_id

I want to add converted query with the following zend query and I need game_count from the above query with the following result.

    $query = $this->select()

    ->setIntegrityCheck(false)

    ->from(array('a' => 'chapter_list'), array('subtopic_id as topic','id as topic_id','grade','chapter_no as chapter','if(file_status=1,1,0) as ppt)','CONCAT("http://mysite.com?t=",subtopic_id) as link'))

    ->joinLeft(array('b' => 'subject_list'), 'a.subject = b.subject_id', array());

    return $this->fetchAll($query)->toArray();

this could help: http://stackoverflow.com/questions/4715718/how-can-i-join-a-subquery-using-zend-db-select — Vitaly Dyatlov, Aug 30 '12 at 17:11

Harish Ambady · Accepted Answer · 2012-08-31T06:14:02.260

Finally I got it,

     $subquery1= $this->select()

    ->setIntegrityCheck(false)

    ->from('games_list', array('count(*) as game_count','topic_id','time as g_time'))

    ->where('type<?', 3)

    ->group('topic_id');

     //main query
     $query = $this->select()

    ->setIntegrityCheck(false)

    ->from(array('a' => 'chapter_list'), array('subtopic_id as topic','id as topic_id','grade','chapter_no as chapter','if(file_status=1,1,0) as ppt)','CONCAT("http://eskool.com/learn?t=",subtopic_id) as link'))

    ->joinLeft(array('b' => 'subject_list'), 'a.subject = b.subject_id', array())

    ->joinLeft(array('c' => $subquery1), 'a.id = c.topic_id', array('IFNULL(game_count,0)','g_time'))

    return $this->fetchAll($query)->toArray();

zend select query inside joinleft

1 Answers1