分页存储过程

调用实例(支持多表Join查询)：

EXEC up_Pagition 'datatable','id','*',pageSize,pageIndex,'','','id asc'

 

------------------------- 代码开始 ------------------------------

CREATE PROCEDURE [dbo].[up_Pagition]
@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
@currentPageIndex 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 * @currentPageIndex + 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