MSSQL分页：查询前几页速度最快的ROW_NUMBER() OVER分页存贮过程

 

CREATE PROCEDURE [dbo].[getPagerROWOVER] 

    @PageIndex int = 1,

    @PageSize int = 10,

    @Tables nvarchar(1000) = NULL,

    @Fields nvarchar(2000) = '*',

    @Where nvarchar(2000) = NULL,

    @GroupBy nvarchar(2000) = NULL,

    @OrderBy nvarchar(1000) = NULL,

    @ReturnCount int = 0 OUTPUT

AS

BEGIN

    SET NOCOUNT ON;

    declare @Sql nvarchar(4000),@startRowIndex int, @maximumRows int;

    declare @strWhere nvarchar(2000)

    declare @strGroupBy nvarchar(2000)



    set @startRowIndex = (@PageIndex - 1) * @PageSize;

    set @maximumRows = @PageSize;



    IF @Where IS NOT NULL AND @Where != ''

    BEGIN

        SET @strWhere = ' WHERE ' + @Where

    END

    ELSE

    BEGIN

        SET @strWhere = ''

    END

    IF @GroupBy IS NOT NULL AND @GroupBy != ''

    BEGIN

        SET @strGroupBy = ' GROUP BY ' + @GroupBy

    END

    ELSE

    BEGIN

        SET @strGroupBy = ''

    END

        

    set @Sql = 'select ' + @Fields + ' from (select ' + @Fields + ', ROW_NUMBER() OVER (ORDER BY ' + @OrderBy + ') as rownum from ' + @Tables + @strWhere + @strGroupBy + ') as tmpTable where rownum > ' + CONVERT(nvarchar(10), @startRowIndex) + ' and rownum <= (' + CONVERT(nvarchar(10), @startRowIndex) + ' + ' + CONVERT(nvarchar(10), @maximumRows) + ')'

    exec(@Sql)

    print @sql

    set @Sql = 'select @ReturnCount=COUNT(*) from ' + @Tables + @strWhere

    exec sp_executesql @Sql,N'@ReturnCount int OUTPUT',@ReturnCount OUTPUT

    print @sql

END

 

 

http://www.cnblogs.com/livexy/archive/2010/07/06/1771936.html