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  • 千万数量级分页存储过程

    参数说明:

    1.Tables :表名称,视图

    2.PrimaryKey :主关键字

    3.Sort :排序语句,不带Order By 比如:NewsID Desc,OrderRows Asc

    4.CurrentPage :当前页码

    5.PageSize :分页尺寸

    6.Filter :过滤语句,不带Where

    7.Group :Group语句,不带Group By

    CREATE PROCEDURE CN5135_SP_Pagination
    /*
    ***************************************************************
    ** 中国无忧商务网千万数量级分页存储过程 **
    ***************************************************************
    参数说明:
    1.Tables :表名称,视图
    2.PrimaryKey :主关键字
    3.Sort :排序语句,不带Order By 比如:NewsID Desc,OrderRows Asc
    4.CurrentPage :当前页码
    5.PageSize :分页尺寸
    6.Filter :过滤语句,不带Where
    7.Group :Group语句,不带Group By

    版权所有:中国无忧商务网(http://www.cn5135.com)
    欢迎试用,有什么心得请 Mail:xzhijun@GMail.com
    注:转载请保留相关版权说明,谢谢!^_^
    ***************************************************************/
    (
    @Tables varchar(1000),
    @PrimaryKey varchar(100),
    @Sort varchar(200) = NULL,
    @CurrentPage int = 1,
    @PageSize int = 10,
    @Fields varchar(1000) = '*',
    @Filter varchar(1000) = NULL,
    @Group varchar(1000) = NULL
    )
    AS

    /*默认排序*/
    IF @Sort IS NULL OR @Sort = ''
    SET @Sort = @PrimaryKey

    DECLARE @SortTable varchar(100)
    DECLARE @SortName varchar(100)
    DECLARE @strSortColumn varchar(200)
    DECLARE @operator char(2)
    DECLARE @type varchar(100)
    DECLARE @prec int

    /*设定排序语句.*/
    IF CHARINDEX('DESC',@Sort)>0
    BEGIN
    SET @strSortColumn = REPLACE(@Sort, 'DESC', '')
    SET @operator = '<='
    END
    ELSE
    BEGIN
    IF CHARINDEX('ASC', @Sort) = 0
    SET @strSortColumn = REPLACE(@Sort, 'ASC', '')
    SET @operator = '>='
    END


    IF CHARINDEX('.', @strSortColumn) > 0
    BEGIN
    SET @SortTable = SUBSTRING(@strSortColumn, 0, CHARINDEX('.',@strSortColumn))
    SET @SortName = SUBSTRING(@strSortColumn, CHARINDEX('.',@strSortColumn) + 1, LEN(@strSortColumn))
    END
    ELSE
    BEGIN
    SET @SortTable = @Tables
    SET @SortName = @strSortColumn
    END

    SELECT @type=t.name, @prec=c.prec
    FROM sysobjects o
    JOIN syscolumns c on o.id=c.id
    JOIN systypes t on c.xusertype=t.xusertype
    WHERE o.name = @SortTable AND c.name = @SortName

    IF CHARINDEX('char', @type) > 0
    SET @type = @type + '(' + CAST(@prec AS varchar) + ')'

    DECLARE @strPageSize varchar(50)
    DECLARE @strStartRow varchar(50)
    DECLARE @strFilter varchar(1000)
    DECLARE @strSimpleFilter varchar(1000)
    DECLARE @strGroup varchar(1000)

    /*默认当前页*/
    IF @CurrentPage < 1
    SET @CurrentPage = 1

    /*设置分页参数.*/
    SET @strPageSize = CAST(@PageSize AS varchar(50))
    SET @strStartRow = CAST(((@CurrentPage - 1)*@PageSize + 1) AS varchar(50))

    /*筛选以及分组语句.*/
    IF @Filter IS NOT NULL AND @Filter != ''
    BEGIN
    SET @strFilter = ' WHERE ' + @Filter + ' '
    SET @strSimpleFilter = ' AND ' + @Filter + ' '
    END
    ELSE
    BEGIN
    SET @strSimpleFilter = ''
    SET @strFilter = ''
    END
    IF @Group IS NOT NULL AND @Group != ''
    SET @strGroup = ' GROUP BY ' + @Group + ' '
    ELSE
    SET @strGroup = ''

    /*执行查询语句*/
    EXEC(
    '
    DECLARE @SortColumn ' + @type + '
    SET ROWCOUNT ' + @strStartRow + '
    SELECT @SortColumn=' + @strSortColumn + ' FROM ' + @Tables + @strFilter + ' ' + @strGroup + ' ORDER BY ' + @Sort + '
    SET ROWCOUNT ' + @strPageSize + '
    SELECT ' + @Fields + ' FROM ' + @Tables + ' WHERE ' + @strSortColumn + @operator + ' @SortColumn ' + @strSimpleFilter + ' ' + @strGroup + ' ORDER BY ' + @Sort + '
    '
    )
    GO

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  • 原文地址:https://www.cnblogs.com/taofx/p/4137786.html
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