mssql 實現排序上移下移

MSSQL:

存儲過程

-- drop PROCEDURE [dbo].[Proc_sort_UpDown] 
create PROCEDURE [dbo].[Proc_sort_UpDown] 
	@Sign int = 0, -- 0： 上移 1：下移 
	@TableName nvarchar(50), <span style="white-space:pre">	</span>-- 表名 
	@ItemName nvarchar(50), <span style="white-space:pre">	</span>-- 主鍵字段名 
	@ItemID int, <span style="white-space:pre">			</span>-- 被移動的主鍵ID 
	@SortName nvarchar(50), <span style="white-space:pre">	</span>-- 排序ID 
	@TypeName nvarchar(50)='', <span style="white-space:pre">	</span>-- 分類字段名 
	@TypeValue nvarchar(50)= '' <span style="white-space:pre">	</span>-- 分類值 
AS 
BEGIN 
	SET NOCOUNT ON 
	DECLARE 
		@SQL nvarchar(4000), 
		@ThisSort int, -- 當前ID 
		@PREVID int, -- 前一個ID 
		@NextID int, -- 後一個ID 
		@Count int 

		--臨時索引表-- 
		CREATE TABLE #Tab 
		( 
		ItemID int, 
		Sort int 
		) 
	SET @SQL = 'INSERT INTO #Tab (ItemID,Sort) SELECT ' 
	+@ItemName+','+@SortName+' FROM '+@TableName 
	--INSERT INTO #Tab (ItemID,Sort) SELECT AutoID,sortID FROM test
	
	IF (@TypeName<>'' AND @TypeValue<>'') SET @SQL = @SQL+' WHERE '+@TypeName+'='+@TypeValue 
	SET @SQL = @SQL+' ORDER BY '+@SortName+' ASC ' 
	--INSERT INTO #Tab (ItemID,Sort) SELECT AutoID,sortID FROM test WHERE lang=cn ORDER BY SortID ASC
	EXEC(@SQL) 
	SET @SQL = '' 

	SELECT @Count = COUNT(*) FROM #Tab 
	SELECT @ThisSort = Sort FROM #Tab WHERE ItemID = @ItemID 
	IF(@ThisSort>1) SELECT @PREVID = ItemID FROM #Tab WHERE Sort=(@ThisSort-1) 
	IF(@ThisSort<@Count) SELECT @NextID = ItemID FROM #Tab WHERE Sort=(@ThisSort+1) 

	IF(@Sign=0) 
	BEGIN 
		IF(@ThisSort>1) 
		BEGIN 
			SET @SQL = 'UPDATE '+@TableName+' SET '+@SortName+'='+CONVERT(varchar(100),(@ThisSort-1))+' WHERE '+@ItemName+' = '+CONVERT(varchar(100),@ItemID) + ';' 
				+ 'UPDATE '+@TableName+' SET '+@SortName+'='+CONVERT(varchar(100),@ThisSort)+' WHERE '+@ItemName+' = '+CONVERT(varchar(100),@PREVID) 

		END 
	END 
	ELSE 
	BEGIN 
		IF(@ThisSort<@Count) 
		BEGIN 
			SET @SQL = 'UPDATE '+@TableName+' SET '+@SortName+'='+CONVERT(varchar(100),(@ThisSort+1))+' WHERE '+@ItemName+' = '+CONVERT(varchar(100),@ItemID) + ';' 
				+ 'UPDATE '+@TableName+' SET '+@SortName+'='+CONVERT(varchar(100),@ThisSort)+' WHERE '+@ItemName+' = '+CONVERT(varchar(100),@NextID) 
		END 
	END 

EXEC(@SQL) 

END 

測試表

CREATE TABLE [dbo].[test](
	[AutoID] [int] IDENTITY(1,1) NOT NULL,
	[cName] [varchar](50) NULL,
	[sortID] [int] NULL,
 CONSTRAINT [PK_test] PRIMARY KEY CLUSTERED 
(
	[AutoID] ASC
)WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]
) ON [PRIMARY]

GO

SET ANSI_PADDING OFF
GO
-- 測試數據
INSERT INTO [Demo].[dbo].[test]
           ([cName]
           ,[sortID])
     VALUES
           ('JAVA',1),
           ('C++',2),
           ('C#',3),
           ('Object-C',4),
           ('PHP',5),
           ('Ruby',6),
           ('Python',7)
GO

應用操作->存儲過程執行

DECLARE @RC int
DECLARE @Sign int
DECLARE @TableName nvarchar(50)
DECLARE @ItemName nvarchar(50)
DECLARE @ItemID int
DECLARE @SortName nvarchar(50)
DECLARE @TypeName nvarchar(50)
DECLARE @TypeValue nvarchar(50)

select @Sign=0
select @TableName='test'
select @ItemName='AutoID'
select @ItemID=6
select @SortName='sortID'
select @TypeName=''
select @TypeValue=''


EXECUTE @RC = [Demo].[dbo].[Proc_sort_UpDown] 
   @Sign
  ,@TableName
  ,@ItemName
  ,@ItemID
  ,@SortName
  ,@TypeName
  ,@TypeValue
GO