mysql排序的中文首字母排序和自定义排序

select
		*
		FROM organ_new
		where city_code = \'SZ0755\' and organ_type =
		\'H\' and state = \'1\'
		ORDER BY 
                FIELD(organ_category,\'三级\',\'二级\',\'一级\') ,#自定义排序
                CONVERT(organ_name USING gbk) COLLATE  #中文首字母排序
		gbk_chinese_ci DESC