Mysql 中和同to_char 一样用法的函数

STR_TO_DATE（）

		$sql = " SELECT ";
		$sql .= " m_img,m_content,STR_TO_DATE(m_time,"%Y-%m-%d") as m_time ";
		$sql .= " FROM ";
		$sql .= " message "; 
		$sql .= " ORDER BY message.m_time DESC ";
		$rs = $this->db->query($sql); 
		$ClickArticle = $rs->result();	
		return $ClickArticle;