Codeigniter mysql求和查询

Question

 $this->db->select('SUM(status = In Stock)As In Stock,SUM(status = Allocated)AS Allocated,SUM(status = Decommission) as Decommission,SUM(status = In transit)AS In Transit');
    // $this->db->from('assets');
     $this->db->group_by("assettype,location");
     $query = $this->db->get('assets');

在上面的查询中出现语法错误。 请帮助

Answer 1

变化 $ this-＆gt; db-＆gt; select（'SUM（status =“In Stock”）作为In_Stock，SUM（status =“Allocated”）AS已分配，SUM（status =“Decommission”）为Decommission，SUM（status = “在途中”）AS In_Transit'）;