.NET海量分頁數據存儲過程二

 存儲過程2

 

CREATE PROCEDURE [dbo].[GetRecordFromPage]
    @SelectList            VARCHAR(2000),    --欲選擇字段列表
    @TableSource        VARCHAR(100),    --表名或視圖表
    @SearchCondition    VARCHAR(2000),    --查詢條件
    @OrderExpression    VARCHAR(1000),    --排序表達式
    @PageIndex            INT = 1,        --頁號,從0開始
    @PageSize            INT = 10        --頁尺寸
AS
BEGIN
    IF @SelectList IS NULL OR LTRIM(RTRIM(@SelectList)) = ''
    BEGIN
        SET @SelectList = '*'
    END
    PRINT @SelectList

    SET @SearchCondition = ISNULL(@SearchCondition,'')
    SET @SearchCondition = LTRIM(RTRIM(@SearchCondition))
    IF @SearchCondition <> ''
    BEGIN
        IF UPPER(SUBSTRING(@SearchCondition,1,5)) <> 'WHERE'
        BEGIN
            SET @SearchCondition = 'WHERE ' + @SearchCondition
        END
    END
    PRINT @SearchCondition

    SET @OrderExpression = ISNULL(@OrderExpression,'')
    SET @OrderExpression = LTRIM(RTRIM(@OrderExpression))
    IF @OrderExpression <> ''
    BEGIN
        IF UPPER(SUBSTRING(@OrderExpression,1,5)) <> 'WHERE'
        BEGIN
            SET @OrderExpression = 'ORDER BY ' + @OrderExpression
        END
    END
    PRINT @OrderExpression

    IF @PageIndex IS NULL OR @PageIndex < 1
    BEGIN
        SET @PageIndex = 1
    END
    PRINT @PageIndex
    IF @PageSize IS NULL OR @PageSize < 1
    BEGIN
        SET @PageSize = 10
    END
    PRINT  @PageSize

    DECLARE @SqlQuery VARCHAR(4000)

    SET @SqlQuery='SELECT '+@SelectList+',RowNumber
    FROM
        (SELECT ' + @SelectList + ',ROW_NUMBER() OVER( '+ @OrderExpression +') AS RowNumber
          FROM '+@TableSource+' '+ @SearchCondition +') AS RowNumberTableSource
    WHERE RowNumber BETWEEN ' + CAST(((@PageIndex - 1)* @PageSize+1) AS VARCHAR)
    + ' AND ' +
    CAST((@PageIndex * @PageSize) AS VARCHAR)
--    ORDER BY ' + @OrderExpression
    PRINT @SqlQuery
    SET NOCOUNT ON
    EXECUTE(@SqlQuery)
    SET NOCOUNT OFF

    RETURN @@RowCount
END

 

原文鏈接：http://www.cnblogs.com/wdy6279/archive/2011/04/29/2032448.html