How to use union in zend db

Question

In sql i am using union i don\'t know how to write it in zend db.

select m.*, 0 as is_shared from test m where user_id = $userId 
union
select m.*,1 as is_sh         


        

Answer 1

According to the Zend_Db_Select documentation, you can create one query for each member of the union (they can be strings or Zend_Db_Select objects themselves), and then call the union() method of Zend_Db_Select.

Something like:

$sql1 = FIRSTPARTOFTHEQUERY;
$sql2 = SECONDPARTOFTHEQUERY;
$select = $db->select();
$select->union(array($sql1, $sql2));

Hope that helps,