数据上移下移简单的存储过程

上移下移存储过程

改存储过程只有两个参数，要移动的id和排序的方式。tabelname需要动态的改变！

WG_sysConfig是要改变的哦tabelName，id是排序主键，orderid是排序字段！

本来我是打算写个适合全部数据的存储过程，可总是实现不了 ，热心的博友请帮我看看端代码

USE [WeiGou]
GO
/****** Object:  StoredProcedure [dbo].[pro_moveUpOrDown]    Script Date: 07/26/2013 16:10:00 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
ALTER procedure [dbo].[pro_moveUpOrDown]
@Id as int, --数据标志id
@orderType as int --0升序，1降序


As

declare @currentOrderId int --当前标志Id的排序id
declare @nextId int --下一个数据标志Id
declare @nextOrderId  int --下一个数据的排序id
declare @lastId int --上一个数据的标志Id
declare @lastOrderId int --上个数据的排序id
declare @temple varchar(10) --操作过程中varvhar 和int之间的转换 
declare @maxOrderId int --降序时最大排序Id
declare @minOrderId int --升序是最小排序id

declare @sql varchar(200)

Begin
select  @currentOrderId=orderId from WG_sysConfig where id=@Id

if(@orderType=0)
  Begin   --升序
       --if(@currentOrderId=1)
		--  Begin
			 --当前排序就是1，无需升序
		--  End
	   select @minOrderId=MIN(orderId) from  WG_sysConfig   --查找最小排序id
       if(@currentOrderId<>@minOrderId)                     --当前id不等于最小id才有升序资格
       Begin
          --查询上一个数据的Id和orderId
            select top 1 @lastId=id,@lastOrderId=orderId from Wg_sysConfig where orderId <@currentOrderId order by orderId desc
            --当前orderid -1 上个+1
            update WG_sysConfig set orderId=orderId+1 where id=@lastId
            update WG_sysConfig set orderId=orderId-1 where id=@Id
       End
  End
 else  --降序
	 Begin
	 
	   select @maxOrderId=Max(orderId) from  WG_sysConfig   --查找最大排序Id
	   select @maxOrderId
	    --查找最大排序Id
       if(@currentOrderId<>@maxOrderId)                      --当前id不等于最大id才有升序资格
       
       Begin
          --查询上一个数据的Id和orderId
            select top 1 @nextId=id,@nextOrderId=orderId from Wg_sysConfig where orderId >@currentOrderId order by orderId asc
             
               select top 1 @nextId=id,@nextOrderId=orderId from Wg_sysConfig where orderId >@currentOrderId order by orderId asc
              --当前orderid +1 上个-1
            update WG_sysConfig set orderId=orderId-1 where id=@nextId
            update WG_sysConfig set orderId=orderId+1 where id=@Id
       End
	 End
 
end

　　

纠结的代码

USE [WeiGou]
GO
/****** Object:  StoredProcedure [dbo].[Proc_MoveUpOrDown]    Script Date: 07/26/2013 15:06:55 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
-- ================================================
-- Template generated from Template Explorer using:
-- Create Procedure (New Menu).SQL
--
-- Use the Specify Values for Template Parameters 
--
ALTER PROCEDURE [dbo].[Proc_MoveUpOrDown]

@keyFiled varchar(20), --主键字段
@keyValue int ,  --主键值（一般是id，并且设置自动增长）
@orderType as int, --0升序，1降序
@tabelName as varchar(20), --表明
@sortField as varchar(20)--排序字段

As
declare @currentOrderId int --当前标志Id的排序id
declare @nextId int --下一个数据标志Id
declare @nextOrderId  int --下一个数据的排序id
declare @lastId int --上一个数据的标志Id
declare @lastOrderId int --上个数据的排序id
declare @temple varchar(10) --操作过程中varvhar 和int之间的转换 
declare @maxOrderId int --降序时最大排序Id
declare @minOrderId int --升序是最小排序id

declare @tempSql varchar(200) --中间sql语句，存放最后执行的sql语句
declare @tempField varchar(20) --中间sql语句，存放中间变量

Begin
在这一步就开始纠结， 我就是想选择两个数然后赋值而已，总是实现不了，苦逼啊
--select  @currentOrderId=@sortField from WG_sysConfig where @keyFiled=cast(@keyValue as varchar(10))    --选择出当前排序Id
set @tempField=('select '+@sortField+' from WG_sysConfg where '+@keyFiled+'='+CAST(@keyValue as varchar(10)))
set @currentOrderId=CAST(@tempField as int)
if(@orderType=0)
  Begin   --升序
	   select @minOrderId=MIN(orderId) from  WG_sysConfig   --查找最小排序id
       if(@currentOrderId<>@minOrderId)                     --当前id不等于最小id才有升序资格
       Begin
          --查询上一个数据的Id和orderId
          -- select top 1 @lastId=@id,@lastOrderId=@sortField from [@tableName]  where @sortField <@currentOrderId order by @sortField desc
           
           set @lastId=('select top 1 '+@keyFiled+' from '+@tabelName +'where '+@sortField+' < '+@currentOrderId +'order by '+@sortField +'desc')
           set @lastOrderId=('select top 1 '+@sortField+' from '+@tabelName +'where '+@sortField+' < '+@currentOrderId +'order by '+@sortField +'desc')
           
            --当前orderid -1 上个+1
            update WG_sysConfig set orderId=orderId+1 where id=@lastId
            update WG_sysConfig set orderId=orderId-1 where @keyFiled=@keyValue
       End
  End
 else  --降序
	 Begin
	 
	   select @maxOrderId=Max(orderId) from  WG_sysConfig   --查找最大排序Id
	   select @maxOrderId
	    --查找最大排序Id
       if(@currentOrderId<>@maxOrderId)                      --当前id不等于最大id才有升序资格
       
       Begin
          --查询上一个数据的Id和orderId
           -- select top 1 @nextId=id,@nextOrderId=orderId from Wg_sysConfig where orderId >@currentOrderId order by orderId asc
            set @nextId=('select top 1 '+@keyFiled+' from '+@tabelName +'where '+@sortField+' > '+@currentOrderId +'order by '+@sortField +'asc')
           set @nextOrderId=('select top 1 '+@sortField+' from '+@tabelName +'where '+@sortField+' > '+@currentOrderId +'order by '+@sortField +'asc')
             
              --当前orderid +1 上个-1
            set @tempSql='update'+@tabelName+' set '+@sortField+'='+@sortField-1+' where '+@keyFiled+'='+@nextId
            set @tempSql=@tempSql+'update'+@tabelName+' set '+@sortField+'='+@sortField+1+' where '+@keyFiled+'='+@nextId
           -- update WG_sysConfig set orderId=orderId-1 where id=@nextId
           -- update WG_sysConfig set orderId=orderId+1 where id=@Id
       End
	 End
 
end