/*--用存储过程实现的分页程序显示指定表、视图、查询结果的第x页对于表中主键或标识列的情况,直接从原表取数查询，其它情况使用临时表的方法如果视图或查询结果中有主键,不推荐此方法--邹建 2003.09--*//*--调用示例exec p_show '地区资料'exec p_show '地区资料',5,3,'地区编号,地区名称,助记码','地区编号'--*//*因为要顾及通用性,所以对带排序的查询语句有一定要求.如果先排序,再出结果.就是:exec p_show 'select top 100 percent * from 地区资料 order by 地区名称',5,3,'地区编号,地区名称,助记码','地区名称'--查询语句加上:top 100 percent //top时*/if exists (select * from dbo.sysobjects where id = object_id(n'[dbo].[p_show]') and objectproperty(id, n'isprocedure') = 1)drop procedure [dbo].[p_show]gocreate proc [email protected]ystr nvarchar(4000),--表名、视图名、查询语句@pagesize int=10,--每页的大小(行数)@pagecurrent int=1,--要显示的页@fdshow nvarchar (4000)='',--要显示的字段列表,如果查询结果有标识字段,需要指定此值,且不包含标识字段@fdorder nvarchar (1000)=''--排序字段列表asdeclare @fdname nvarchar(250)--表中的主键或表、临时表中的标识列名,@id1 varchar(20),@id2 varchar(20)--开始和结束的记录号,@obj_id int--对象id--表中有复合主键的处理declare @strfd nvarchar(2000)--复合主键列表,@strjoin nvarchar(4000)--连接字段,@strwhere nvarchar(2000)--查询条件select @obj_id=object_id(@querystr),@fdshow=case isnull(@fdshow,'') when '' then ' *' else ' '[email protected] end,@fdorder=case isnull(@fdorder,'') when '' then '' else ' order by '[email protected] end,@querystr=case when @obj_id is not null then ' '[email protected] else ' ('[email protected]+') a' end--如果显示第一页，可以直接用top来完成if @pagecurrent=1beginselect @id1=cast(@pagesize as varchar(20))exec('select top '[email protected][email protected]+' from '[email protected][email protected])returnend--如果是表,则检查表中是否有标识更或主键if @obj_id is not null and objectproperty(@obj_id,'istable')=1beginselect @id1=cast(@pagesize as varchar(20)),@id2=cast((@pagecurrent-1)*@pagesize as varchar(20))select @fdname=name from syscolumns where [email protected]_id and status=0x80if @@rowcount=0--如果表中无标识列,则检查表中是否有主键beginif not exists(select 1 from sysobjects where [email protected]_id and xtype='pk')goto lbusetemp--如果表中无主键,则用临时表处理select @fdname=name from syscolumns where [email protected]_id and colid in(select colid from sysindexkeys where @obj_id=id and indid in(select indid from sysindexes where @obj_id=id and name in(select name from sysobjects where xtype='pk' and [email protected]_id)))if @@rowcount>1--检查表中的主键是否为复合主键beginselect @strfd='',@strjoin='',@strwhere=''select @[email protected]+',['+name+']',@[email protected]+' and a.['+name+']=b.['+name+']',@[email protected]+' and b.['+name+'] is null'from syscolumns where [email protected]_id and colid in(select colid from sysindexkeys where @obj_id=id and indid in(select indid from sysindexes where @obj_id=id and name in(select name from sysobjects where xtype='pk' and [email protected]_id)))select @strfd=substring(@strfd,2,2000),@strjoin=substring(@strjoin,5,4000),@strwhere=substring(@strwhere,5,4000)goto lbusepkendendendelsegoto lbusetemp/*--使用标识列或主键为单一字段的处理方法--*/lbuseidentity:exec('select top '[email protected][email protected]+' from '[email protected]+' where '[email protected]+' not in(select top '[email protected]+' '[email protected]+' from '[email protected][email protected]+')'[email protected])return/*--表中有复合主键的处理方法--*/lbusepk:exec('select '[email protected]+' from(select top '[email protected]+' a.* from(select top 100 percent * from '[email protected][email protected]+') aleft join (select top '[email protected]+' '[email protected]+' from '[email protected][email protected]+') b on '[email protected]+'where '[email protected]+') a')return/*--用临时表处理的方法--*/lbusetemp:select @fdname='[id_'+cast(newid() as varchar(40))+']',@id1=cast(@pagesize*(@pagecurrent-1) as varchar(20)),@id2=cast(@pagesize*@pagecurrent-1 as varchar(20))exec('select '[email protected]+'=identity(int,0,1),'[email protected]+'into #tb from'[email protected][email protected]+'select '[email protected]+' from #tb where '[email protected]+' between '[email protected]+' and '[email protected])go
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