分页存储过程，可支持多表查询

转自http://www.cnblogs.com/sainaxingxing/archive/2008/10/08/1306586.html

注意：该存储过程处理逻辑被发现有严重错误，并不能实现 任意排序等功能。

/*
说明：1.支持多表查询 2.支持任意排序 3.不支持表别名
参考了
    evafly920:[分享]千万数量级分页存储过程（效果演示）
    地址：http://blog.csdn.net/evafly920/archive/2006/03/03/614813.aspx 
*/

IF(EXISTS(SELECT * FROM sysobjects WHERE [id]=OBJECT_ID('usp_PagingLarge') AND xtype='P'))
    DROP PROCEDURE usp_PagingLarge
*/

GO

CREATE PROCEDURE usp_PagingLarge
@TableNames VARCHAR(200),    --表名，可以是多个表，但不能用别名
@PrimaryKey VARCHAR(100),    --主键，可以为空，但@Order为空时该值不能为空
@Fields    VARCHAR(200),        --要取出的字段，可以是多个表的字段，可以为空，为空表示select *
@PageSize INT,            --每页记录数
@CurrentPage INT,        --当前页，0表示第1页
@Filter VARCHAR(200) = '',    --条件，可以为空，不用填 where
@Group VARCHAR(200) = '',    --分组依据，可以为空，不用填 group by
@Order VARCHAR(200) = ''    --排序，可以为空，为空默认按主键升序排列，不用填 order by
AS
BEGIN
    DECLARE @SortColumn VARCHAR(200)
    DECLARE @Operator CHAR(2)
    DECLARE @SortTable VARCHAR(200)
    DECLARE @SortName VARCHAR(200)
    IF @Fields = ''
        SET @Fields = '*'
    IF @Filter = ''
        SET @Filter = 'WHERE 1=1'
    ELSE
        SET @Filter = 'WHERE ' +  @Filter
    IF @Group <>''
        SET @Group = 'GROUP BY ' + @Group

    IF @Order <> ''
    BEGIN
        DECLARE @pos1 INT, @pos2 INT
        SET @Order = REPLACE(REPLACE(@Order, ' asc', ' ASC'), ' desc', ' DESC')
        IF CHARINDEX(' DESC', @Order) > 0
            IF CHARINDEX(' ASC', @Order) > 0
            BEGIN
                IF CHARINDEX(' DESC', @Order) < CHARINDEX(' ASC', @Order)
                    SET @Operator = '<='
                ELSE
                    SET @Operator = '>='
            END
            ELSE
                SET @Operator = '<='
        ELSE
            SET @Operator = '>='
        SET @SortColumn = REPLACE(REPLACE(REPLACE(@Order, ' ASC', ''), ' DESC', ''), ' ', '')
        SET @pos1 = CHARINDEX(',', @SortColumn)
        IF @pos1 > 0
            SET @SortColumn = SUBSTRING(@SortColumn, 1, @pos1-1)
        SET @pos2 = CHARINDEX('.', @SortColumn)
        IF @pos2 > 0
        BEGIN
            SET @SortTable = SUBSTRING(@SortColumn, 1, @pos2-1)
            IF @pos1 > 0 
                SET @SortName = SUBSTRING(@SortColumn, @pos2+1, @pos1-@pos2-1)
            ELSE
                SET @SortName = SUBSTRING(@SortColumn, @pos2+1, LEN(@SortColumn)-@pos2)
        END
        ELSE
        BEGIN
            SET @SortTable = @TableNames
            SET @SortName = @SortColumn
        END
    END
    ELSE
    BEGIN
        SET @SortColumn = @PrimaryKey
        SET @SortTable = @TableNames
        SET @SortName = @SortColumn
        SET @Order = @SortColumn
        SET @Operator = '>='
    END

    DECLARE @type varchar(50)
    DECLARE @prec int
    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 @TopRows INT
    SET @TopRows = @PageSize * @CurrentPage + 1
    print @TopRows
    print @Operator
    EXEC('
        DECLARE @SortColumnBegin ' + @type + '
        SET ROWCOUNT ' + @TopRows + '
        SELECT @SortColumnBegin=' + @SortColumn + ' FROM  ' + @TableNames + ' ' + @Filter + ' ' + @Group + ' ORDER BY ' + @Order + '
        SET ROWCOUNT ' + @PageSize + '
        SELECT ' + @Fields + ' FROM  ' + @TableNames + ' ' + @Filter  + ' AND ' + @SortColumn + '' + @Operator + '@SortColumnBegin ' + @Group + ' ORDER BY ' + @Order + '    
    ')    
END

GO

--调用例子：
    --1.单表/单排序
    EXEC usp_PagingLarge 'bigtable','d_id','d_id,d_title,d_content,d_time',20,1,'','','d_id desc'
    --2.单表/多排序
    EXEC usp_PagingLarge 'bigtable','d_id','*',20,0,'','','d_time asc,d_id desc'
    --3.多表/单排序
    EXEC usp_PagingLarge 'bigtable left join bigtable_author on bigtable.d_id=bigtable_author.BigTable_id', 'bigtable.d_id', 'bigtable.d_id,bigtable.d_title,bigtable.d_content,bigtable.d_time,bigtable_author.d_author', 20, 0, '', '', 'bigtable.d_id asc'
    --4.多表/多排序
    EXEC usp_PagingLarge 'bigtable left join bigtable_author on bigtable.d_id=bigtable_author.BigTable_id', 'bigtable.d_id', 'bigtable.d_id,bigtable.d_title,bigtable.d_content,bigtable.d_time,bigtable_author.d_author', 20, 0, '', '', 'bigtable.d_time asc,bigtable.d_id desc'

[转]: http://jiny-z.cnblogs.com/archive/2006/04/12/373146.aspx

下面有个实例，挺不错的

http://www.dmblogs.com/nzBlog/article.asp?id=25
http://topic.csdn.net/u/20080627/12/4a404bb1-6667-466a-925a-4d7bf690695e.html?1194652084

http://blog.csdn.net/evafly920/archive/2006/03/03/614813.aspx