古老而又实用的存储过程分页代码

USE [xxxxx]
GO

/****** Object:  StoredProcedure [dbo].[PROC_DataPaging]    Script Date: 07/12/2012 14:23:06 ******/
SET ANSI_NULLS ON
GO

SET QUOTED_IDENTIFIER ON
GO

CREATE procedure [dbo].[PROC_DataPaging]
    @tbName nvarchar(255),            --表名
    @tbFields nvarchar(1023),        --返回字段
    @OrderField nvarchar(255),        --排序的字段名
    @PageSize int,                    --页尺寸
    @PageIndex int,                    --页码
    @OrderType bit,                    --排序类型,1是升序,0是降序
    @strWHERE nvarchar(1023),        --查询条件
    @Total int output                --返回总记录数
AS

DECLARE @strSql nvarchar(1023)        --主语句
DECLARE @strOrder nvarchar(255)        --排序
DECLARE @strSqlCount nvarchar(511)    --查询记录总数主语句
DECLARE @strtemp nvarchar(63)        --排序附加语句
--------------排序--------------------1是降序,0未升序
IF @OrderType != 0
    BEGIN
        SET @strtemp  = '>(SELECT MAX('
        SET @strOrder = 'ORDER BY ' + @OrderField + ' ASC '
    END
ELSE
    BEGIN
        SET @strtemp  = '<(SELECT MIN('
        SET @strOrder = 'ORDER BY '+ @OrderField + ' DESC'
    END
--------------总记录数---------------
IF @strWHERE !=''
    BEGIN
        SET @strSqlCount = 'SELECT @TotalCout=count(*) FROM ' + @tbName + ' WHERE ' + @strWHERE
    END
ELSE
    BEGIN
        SET @strSqlCount = 'SELECT @TotalCout=count(*) FROM ' + @tbName
    END
--------------如果是第一页------------
IF @PageIndex = 1
    BEGIN
        IF @strWHERE != ''
            BEGIN
                SET @strSql = 'SELECT TOP' + str(@PageSize)+ ' ' + @tbFields + ' FROM ' + @tbName +' WHERE ' + @strWHERE + ' ' + @strOrder
            END
        ELSE
            BEGIN
                SET @strSql = 'SELECT TOP' + str(@PageSize)+ ' ' + @tbFields + ' FROM ' + @tbName + ' ' + @strOrder
            END
    END
------------第一页之外----------------
ELSE
    BEGIN
        IF @strWHERE != ''
            BEGIN
                SET @strSql = 'SELECT TOP ' + str(@PageSize) + ' ' + @tbFields
                    + ' FROM ' + @tbName + ' WHERE '+ @OrderField +' '
                    + @strtemp + ' ' + @OrderField + ') FROM (SELECT TOP'
                    + str((@PageIndex-1)*@PageSize) + ' ' + @OrderField + ' FROM ' + @tbName + ' WHERE '
                    + @strWHERE + ' ' + @strOrder +') AS tb) AND '+ @strWHERE + ' ' + @strOrder
            END
        ELSE
            BEGIN
                SET @strSql = 'SELECT TOP ' + str(@PageSize) + ' ' + @tbFields
                    + ' FROM ' + @tbName + ' WHERE ' + @OrderField + ' '
                    + @strtemp+ ' ' +@OrderField+ ') FROM (SELECT TOP'
                    + str((@PageIndex-1)*@PageSize) + ' '+ @OrderField +' FROM ' + @tbName
                    + ' '+ @strOrder +') AS tb)'+ @strOrder
            END
    END

exec sp_executesql @strSqlCount, N'@TotalCout int output',@Total output
exec(@strSql)
SELECT @strSql AS StrSQL
SELECT @strSqlCount AS strSqlCount
GO