无限级分类(非递归算法/存储过程版/GUID主键)完整数据库示例_(3)删除记录

-- ============================= -- Author:  <杨俊明,Jimmy.yang@cntvs.com or yjmyzz@126.com> -- Description: <无限级分类_删除分类> -- Return     : 0删除正常,-1父类下还有子类 -- =========================== Alter PROCEDURE [dbo].[up_Class_DeleteEx]  @clsId uniqueidentifier, --要删除的分类  @withChild bit     --是否级联删除子类 AS BEGIN  SET NOCOUNT ON;  Declare @so_MaxOrders int;  Declare @s_Childs int;  Declare @clsType Nvarchar(50);  Declare @O_RootId int;  Select @O_RootId = F_RootId,@clsType = F_Type From T_Class where F_ID=@clsId;

 If (@WithChild=1)     begin    Select @so_maxOrders=max(F_orders) From T_class Where F_ID=@clsId or F_ParentIdStr like '%' + Convert(varchar(50),@clsId) + '%'; --得到自身系的最大排序号    Select @s_Childs= Count(F_ID) from t_Class Where F_ID=@clsId or F_ParentIdStr like '%' + Convert(varchar(50),@clsId) + '%';    Delete from T_Class where ','+F_parentIdStr+',' like '%' + convert(varchar(100),@clsId) + '%'    Delete from T_Class Where F_Id=@ClsId    Update T_Class Set F_Orders = F_Orders - @s_childs where F_Type=@clsType And F_RootId=@O_RootId And F_Orders > @so_maxOrders;    return 0   end  else     --如果不级联删除，又有子节点，则返回-1    If exists(select F_id from T_Class where ',' + F_parentIdStr + ',' like '%' + convert(varchar(100),@clsId) + '%')      return -1   else    begin     Select @so_maxOrders=max(F_orders) From T_class Where F_ID=@clsId or F_ParentIdStr like '%' + Convert(varchar(50),@clsId) + '%'; --得到自身系的最大排序号     Select @s_Childs= 1;     Delete from T_Class Where F_Id=@ClsId;     Update T_Class Set F_Orders = F_Orders - @s_childs where F_Type=@clsType And F_RootId=@O_RootId And F_Orders > @so_maxOrders;     return 0    end END