Zend DB 选择嵌套连接
我正在尝试使用 zend db select 实现以下查询:
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`
我得到了以下内容,但在尝试将嵌套联接转换为 zend 结构时陷入困境:
$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');
Is it possible to get the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来在分页器中进行进一步处理,因此如果不可能,我必须进行直接的 sql 查询。
I'm trying to realize the following query with zend db select:
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`
I got the following, but got stuck when trying to convert the nested join to zend structure:
$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');
Is it possible to get the given sql query into a suitable structure for zend db select? I need a select object for further handling in a paginator, so if this is not possible I have to make a straight forward sql query.
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我知道这个问题已经很老了,但我认为人们仍然可以从这个问题的正确答案中受益。
嵌套连接与
所以这应该工作得很好。
I know the question is old, but i think people might still benefit from the right answer for this question.
That nested join is the same as
So this should work just fine.
我不相信你可以用 Zend_Db_Select 做这样的嵌套连接。最好的选择是创建自己的分页器适配器(这比您想象的要容易,请查看 Select 适配器)并自己管理 SQL 的 LIMIT 部分。
I don't believe you can do a nested join like that with Zend_Db_Select. Your best bet is to create your own paginator adapter (it's easier than you might think, look at the Select one) and manage the LIMIT part of the SQL yourself.