/*--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] GO Create Proc p_show @QueryStr 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 as declare @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 " "+@FdShow end ,@FdOrder=case isnull(@FdOrder,"") when "" then "" else " order by "+@FdOrder end ,@QueryStr=case when @Obj_ID is not null then " "+@QueryStr else " ("+@QueryStr+") a" end --如果显示第一页,可以直接用top来完成 if @PageCurrent=1 begin select @Id1=cast(@PageSize as varchar(20)) exec("select top "+@Id1+@FdShow+" from "+@QueryStr+@FdOrder) return end --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")=1 begin select @Id1=cast(@PageSize as varchar(20)) ,@Id2=cast((@PageCurrent-1)*@PageSize as varchar(20)) select @FdName=name from syscolumns where id=@Obj_ID and status=0x80 if @@rowcount=0 --如果表中无标识列,则检查表中是否有主键 begin if not exists(select 1 from sysobjects where parent_obj=@Obj_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 id=@Obj_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 parent_obj=@Obj_ID ))) if @@rowcount>1 --检查表中的主键是否为复合主键 begin select @strfd="",@strjoin="",@strwhere="" select @strfd=@strfd+",["+name+"]" ,@strjoin=@strjoin+" and a.["+name+"]=b.["+name+"]" ,@strwhere=@strwhere+" and b.["+name+"] is null" from syscolumns where id=@Obj_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 parent_obj=@Obj_ID ))) select @strfd=substring(@strfd,2,2000) ,@strjoin=substring(@strjoin,5,4000) ,@strwhere=substring(@strwhere,5,4000) goto lbusepk end end end else goto lbusetemp /*--使用标识列或主键为单一字段的处理方法--*/ lbuseidentity: exec("select top "+@Id1+@FdShow+" from "+@QueryStr +" where "+@FdName+" not in(select top " +@Id2+" "+@FdName+" from "+@QueryStr+@FdOrder +")"+@FdOrder ) return /*--表中有复合主键的处理方法--*/ lbusepk: exec("select "+@FdShow+" from(select top "+@Id1+" a.* from (select top 100 percent * from "+@QueryStr+@FdOrder+") a left join (select top "+@Id2+" "+@strfd+" from "+@QueryStr+@FdOrder+") b on "+@strjoin+" where "+@strwhere+") 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 "+@FdName+"=identity(int,0,1),"+@FdShow+" into #tb from"+@QueryStr+@FdOrder+" select "+@FdShow+" from #tb where "+@FdName+" between " +@Id1+" and "+@Id2 ) GO