Zend MySQL仅在满足所有其他条件时才返回值

Question

我想知道如何创建Zend / MySQL以检查是否存在BLOB。我使用的代码不起作用。任何建议将不胜感激。

$result = array();  
$select = $this->select();  
$select->setIntegrityCheck(false);  
$select->from($this->_name, '*')  
        ->where(LENGTH($this->_name.'.ad_image') <= 0);  
$result = $this->fetchAll($select)->toArray();  

Answer 1

尝试......

$select->from($this->_name, '*')  
        ->where("LENGTH({$this->_name}.ad_image) <= 0");