CREATE PROC sp_PageView
@tbname     sysname,           	--要分頁顯示的表名
@FieldKey   nvarchar(1000),  	--用于定位記錄的主鍵(惟一鍵)字段,可以是逗號(hào)分隔的多個(gè)字段
@PageCurrent int=1,           	--要顯示的頁碼
@PageSize   int=10,            	--每頁的大小(記錄數(shù))
@FieldShow nvarchar(1000)='',  	--以逗號(hào)分隔的要顯示的字段列表,如果不指定,則顯示所有字段
@FieldOrder nvarchar(1000)='',  	--以逗號(hào)分隔的排序字段列表,可以指定在字段后面指定DESC/ASC
                                          用于指定排序順序
@Where    nvarchar(1000)='', 	--查詢條件
@PageCount int OUTPUT         	--總頁數(shù)
AS
SET NOCOUNT ON
--檢查對(duì)象是否有效
IF OBJECT_ID(@tbname) IS NULL
BEGIN
	RAISERROR(N'對(duì)象"%s"不存在',1,16,@tbname)
	RETURN
END
IF OBJECTPROPERTY(OBJECT_ID(@tbname),N'IsTable')=0
	AND OBJECTPROPERTY(OBJECT_ID(@tbname),N'IsView')=0
	AND OBJECTPROPERTY(OBJECT_ID(@tbname),N'IsTableFunction')=0
BEGIN
	RAISERROR(N'"%s"不是表、視圖或者表值函數(shù)',1,16,@tbname)
	RETURN
END

--分頁字段檢查
IF ISNULL(@FieldKey,N'')=''
BEGIN
	RAISERROR(N'分頁處理需要主鍵（或者惟一鍵）',1,16)
	RETURN
END

--其他參數(shù)檢查及規(guī)范
IF ISNULL(@PageCurrent,0)<1 SET @PageCurrent=1
IF ISNULL(@PageSize,0)<1 SET @PageSize=10
IF ISNULL(@FieldShow,N'')=N'' SET @FieldShow=N'*'
IF ISNULL(@FieldOrder,N'')=N''
	SET @FieldOrder=N''
ELSE
	SET @FieldOrder=N'ORDER BY '+LTRIM(@FieldOrder)
IF ISNULL(@Where,N'')=N''
	SET @Where=N''
ELSE
	SET @Where=N'WHERE ('+@Where+N')'

--如果@PageCount為NULL值,則計(jì)算總頁數(shù)(這樣設(shè)計(jì)可以只在第一次計(jì)算總頁數(shù),以后調(diào)用時(shí),把總頁數(shù)傳回給存儲(chǔ)過程,避免再次計(jì)算總頁數(shù),對(duì)于不想計(jì)算總頁數(shù)的處理而言,可以給@PageCount賦值)
IF @PageCount IS NULL
BEGIN
	DECLARE @sql nvarchar(4000)
	SET @sql=N'SELECT @PageCount=COUNT(*)'
		+N' FROM '+@tbname
		+N' '+@Where
	EXEC sp_executesql @sql,N'@PageCount int OUTPUT',@PageCount OUTPUT
	SET @PageCount=(@PageCount+@PageSize-1)/@PageSize
END

--計(jì)算分頁顯示的TOPN值
DECLARE @TopN varchar(20),@TopN1 varchar(20)
SELECT @TopN=@PageSize,
	@TopN1=(@PageCurrent-1)*@PageSize

--第一頁直接顯示
IF @PageCurrent=1
	EXEC(N'SELECT TOP '+@TopN
		+N' '+@FieldShow
		+N' FROM '+@tbname
		+N' '+@Where
		+N' '+@FieldOrder)
ELSE
BEGIN
	--處理別名
	IF @FieldShow=N'*'
		SET @FieldShow=N'a.*'

	--生成主鍵(惟一鍵)處理?xiàng)l件
	DECLARE @Where1 nvarchar(4000),@Where2 nvarchar(4000),
		@s nvarchar(1000),@Field sysname
	SELECT @Where1=N'',@Where2=N'',@s=@FieldKey
	WHILE CHARINDEX(N',',@s)>0
		SELECT @Field=LEFT(@s,CHARINDEX(N',',@s)-1),
			@s=STUFF(@s,1,CHARINDEX(N',',@s),N''),
			@Where1=@Where1+N' AND a.'+@Field+N'=b.'+@Field,
			@Where2=@Where2+N' AND b.'+@Field+N' IS NULL',
			@Where=REPLACE(@Where,@Field,N'a.'+@Field),
			@FieldOrder=REPLACE(@FieldOrder,@Field,N'a.'+@Field),
			@FieldShow=REPLACE(@FieldShow,@Field,N'a.'+@Field)
	SELECT @Where=REPLACE(@Where,@s,N'a.'+@s),
		@FieldOrder=REPLACE(@FieldOrder,@s,N'a.'+@s),
		@FieldShow=REPLACE(@FieldShow,@s,N'a.'+@s),
		@Where1=STUFF(@Where1+N' AND a.'+@s+N'=b.'+@s,1,5,N''),	
		@Where2=CASE
			WHEN @Where='' THEN N'WHERE ('
			ELSE @Where+N' AND ('
			END+N'b.'+@s+N' IS NULL'+@Where2+N')'

	--執(zhí)行查詢
	EXEC(N'SELECT TOP '+@TopN
		+N' '+@FieldShow
		+N' FROM '+@tbname
		+N' a LEFT JOIN(SELECT TOP '+@TopN1
		+N' '+@FieldKey
		+N' FROM '+@tbname
		+N' a '+@Where
		+N' '+@FieldOrder
		+N')b ON '+@Where1
		+N' '+@Where2
		+N' '+@FieldOrder)
END