/******************/
--Author:梦在旅途(www.Zuowenjun.cn)
--CreateDate:2015-06-02
--Function:分页获取数据
/******************/
create procedure [dbo].[sp_DataPaging]
(
@selectsql	nvarchar(200),--查询字段SQL，不含select,支持灵活写法，如：col1,col3,isnull(col4,'') as col4
@fromsql	nvarchar(500),--查询表及条件SQL,不含from，若包含条件请加上where,如：table where col1='test'
@orderbysql nvarchar(100),--查询排序SQL，不含order by,如：id order by desc
@pagesize	int=20,--每页显示记录数
@pageno		int=1,--当前查询页码，从1开始
@returnrecordcount bit=1 --是否需要返回总记录数，若设为1，则返回两个结果表
)
as
begin

	declare @sqlcount nvarchar(500),@sqlstring nvarchar(max)
	
	set @sqlstring=N'from (select row_number() over (order by ' + @orderbysql + N') as rowId,' + @selectsql + N' from '
				+ @fromsql +N') as t'
	if(@returnrecordcount=1)
	begin
		set @sqlcount=N'select count(rowId) as resultcount ' + @sqlstring
		exec(@sqlcount)
	end

	set @sqlstring=N'select * ' + @sqlstring + ' where rowId between ' + convert(nvarchar(50),(@pageno-1)*@pagesize+1)+' and '+convert(nvarchar(50),@pageno*@pagesize)
	
	exec(@sqlstring)
	
end

--单表查询
exec [dbo].[sp_DataPaging] '*','AssetDetail','assetsingleno',10,1

--多表查询
exec [dbo].[sp_DataPaging] 'a.*','Inventory a left join AssetDetail b 
on a.StoreNo=b.StoreNo and a.CompanyID=b.CompanyID
inner join Asset c on b.AssetID=c.ID and b.CompanyID=c.CompanyID','a.id',20,3,1