Zend 2中两个表的联合

Question

我想在zf2中使用where子句将两个表联合起来: -

table1 app_followers
table2 app_users
where condition可以是任何东西
,并按updated_date排序.

请让我知道zend 2的查询.

谢谢..

Answer 1

使用UNION是ZF2:

使用ZF2专用类Zend\Db\Sql\CombineCombine

    new Combine(
     [
      $select1,
      $select2,
      $select3,
       ...
     ]
    )

使用组合的详细示例如下:

$select1 = $sql->select('java');
$select2 = $sql->select('dotnet');
$select1->combine($select2);

$select3 = $sql->select('android');

$selectall3 = $sql->select();
$selectall3->from(array('sel1and2' => $select1));
$selectall3->combine($select3);

$select4 = $sql->select('network');

$selectall4 = $sql->select();
$selectall4->from(array('sel1and2and3' => $selectall3));
$selectall4->combine($select4);

$select5 = $sql->select('dmining');

$selectall5 = $sql->select();
$selectall5->from(array('sel1and2and3and4' => $selectall4));
$selectall5->combine($select5);

这相当于UNION的普通SQL查询:

SELECT * FROM java 
UNION SELECT * from dotnet 
UNION SELECT * from android 
UNION SELECT * from network;
UNION SELECT * from dmining;

我希望它有所帮助.