我试图实现与Zend以下查询数据库中进行选择:嵌套的Zend DB选择加入
SELECT `uac`.`uid`, `u`.`uid`, `g`.`groupid`, `g`.`packageid`
FROM `user_has_data` AS `uac`
INNER JOIN `users` AS `u` ON u.uid = uac.uid
LEFT JOIN (`user_in_group` AS `uig`
INNER JOIN `groups` AS `ag` ON (ag.groupid = uig.groupid) AND (ag.packageid = 2)
) AS `g` ON uac.uid = g.uid
WHERE (uac.dataid = '3') AND (u.uname LIKE 'test%')
GROUP BY `u`.`uid`
我得到了下面的,但试图转换嵌套连接到Zend的结构时卡住了:
$select = $db->select()->from(array('uac' => 'user_has_data'), array('uac.uid'))
->join(array('u' => 'users'), 'u.uid = uac.uid', array('uid', 'uname'))
->joinLeft(array('uig' => 'user_in_groups'), 'uig.uid = uid', array('agid' => 'uig.groupid'))
->join(array('ag' => 'groups'), '(ag.agid = uig.groupid) AND (ag.packageid = '.$packageid.')', array('packageid'))
->where('uac.dataid = ?', $dataid)
->where('(u.uname LIKE ?)', $value)
->group('u.uid');
是否有可能将给定的sql查询转换为适合zend db select的结构?我需要一个选择对象进一步处理paginator,所以如果这是不可能的,我必须做一个直接的SQL查询。
这是真的,但性能往往会更糟糕,特别是在处理联接中的子查询的MySQL非常糟糕 – limos 2013-06-27 08:53:46