毫秒级百万数据分页存储过程(mssql)

/****** Object:  StoredProcedure [dbo].[up_Page2005]    Script Date: 11/28/2013 17:10:47 ******/

SET ANSI_NULLS ON

GO

SET QUOTED_IDENTIFIER ON

GO



CREATE PROC [dbo].[up_Page2005]

    (

      @TableName VARCHAR(MAX) ,        --表名                

      @Fields VARCHAR(5000) = '*' ,    --字段名(全部字段为*)                

      @OrderField VARCHAR(5000) ,        --排序字段(必须!支持多字段)                

      @sqlWhere VARCHAR(5000) = NULL ,--条件语句(不用加where)                

      @pageSize INT ,                    --每页多少条记录                

      @pageIndex INT = 1             --指定当前为第几页            

    )

AS 

    BEGIN                

        DECLARE @sql NVARCHAR(MAX);                

        DECLARE @totalRecord INT;                

        DECLARE @TotalPage INT;                        

                

    --计算总记录数                              

        IF ( @SqlWhere = ''

             OR @sqlWhere = NULL

           ) 

            SET @sql = 'select @totalRecord = count(*) from ' + @TableName                

        ELSE 

            SET @sql = 'select @totalRecord = count(*) from ' + @TableName

                + ' where 1=1 ' + @sqlWhere                

                

        EXEC sp_executesql @sql, N'@totalRecord int OUTPUT',

            @totalRecord OUTPUT--计算总记录数           

                         

    --计算总页数                

        SELECT  @TotalPage = CEILING(( @totalRecord + 0.0 ) / @PageSize)                

                

        IF ( @SqlWhere = ''

             OR @sqlWhere = NULL

           ) 

            SET @sql = 'Select top (' + CONVERT(VARCHAR, @pageSize) + ') '

                + @Fields + ' FROM (select ROW_NUMBER() Over(order by '

                + @OrderField + ') as 编号,' + @Fields + ' from ' + @TableName                 

        ELSE 

            SET @sql = 'Select top (' + CONVERT(VARCHAR, @pageSize) + ') '

                + @Fields + ' FROM (select ROW_NUMBER() Over(order by '

                + @OrderField + ') as 编号,' + @Fields + ' from ' + @TableName

                + ' where 1=1 ' + @SqlWhere                    

                       

                

    --处理页数超出范围情况                

        IF @PageIndex <= 0 

            SET @pageIndex = 1                

                    

        IF @pageIndex > @TotalPage 

            SET @pageIndex = @TotalPage                

                

     --处理开始点和结束点                

        DECLARE @StartRecord INT                

        DECLARE @EndRecord INT                

                    

        SET @StartRecord = ( @pageIndex - 1 ) * @PageSize + 1                

        SET @EndRecord = @StartRecord + @pageSize - 1                

                

    --继续合成sql语句                

        SET @Sql = @Sql + ') as t where 编号>=' + CONVERT(VARCHAR, @StartRecord)

            + ' order by 编号'       

        EXEC(@Sql)                    

        IF @@Error <> 0 

            RETURN -1                  

        ELSE 

            SELECT  @totalRecord ,

                    @TotalPage ---返回记录总数,返回总页数                   

    END 

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