SelectQueryInterface::getUnion
public function SelectQueryInterface::getUnion
public &SelectQueryInterface::getUnion()
Returns a reference to the union queries for this query. This include queries for UNION, UNION ALL, and UNION DISTINCT.
Because this method returns by reference, alter hooks may edit the tables array directly to make their changes. If just adding union queries, however, the use of the union() method is preferred.
Note that this method must be called by reference as well:
$fields =& $query->getUnion();
Return value
A reference to the union query array structure.
File
- includes/database/select.inc, line 150
Class
- SelectQueryInterface
- Interface definition for a Select Query object.
Code
public function &getUnion();
© 2001–2016 by the original authors
Licensed under the GNU General Public License, version 2 and later.
Drupal is a registered trademark of Dries Buytaert.
https://api.drupal.org/api/drupal/includes!database!select.inc/function/SelectQueryInterface::getUnion/7.x