我试图从另一个表中尚未出现的表中获取结果.
为此,我在where子句中使用subQuery和NOT IN表达式.正常的sql工作如下:
为此,我在where子句中使用subQuery和NOT IN表达式.正常的sql工作如下:
SELECT `products`.* FROM `products` WHERE `products`.`pro_id` **NOT IN** ( SELECT `product_collection`.`pro_id` AS `pro_id` FROM `product_collection` WHERE `coll_id` = '6' ) AND products.pro_id IN (55,56,57,62)
我在项目中使用zf2.问题是我不知道如何在where子句中使用NOT IN表达式.我们可以在Where子句中使用where-> in()作为IN表达式.例如.
//$productIds is an array //$collectionId is an id $subSelect = $this->getRawsql()->select('product_collection'); $subSelect -> columns(array('pro_id')); $subSelect -> where(array('coll_id'=>$collectionId)); $select = $this->getRawsql()->select('products'); $select -> **where->in**('products.pro_id',$subSelect) -> where->in('products.pro_id',$productIds);
但我不知道如何使用NOT IN表达式.
像使用In()一样使用notIn().
见: http://framework.zend.com/apidoc/2.1/classes/Zend.Db.Sql.Predicate.NotIn.html
见: http://framework.zend.com/apidoc/2.1/classes/Zend.Db.Sql.Predicate.NotIn.html
$subSelect = $this->getRawsql()->select('product_collection'); $subSelect -> columns(array('pro_id')); $subSelect -> where(array('coll_id'=>$collectionId)); $select = $this->getRawsql()->select('products'); $select ->where->notIn('products.pro_id',$subSelect) ->where->in('products.pro_id',$productIds);
编辑:
或者改用它
$select ->where ->addPredicate(new Zend\Db\sql\Predicate\Expression('products.pro_id NOT IN (?)',array($subSelect)))