分頁 sqlserver存儲過程
/*–用存儲過程實現的分頁程序
顯示指定表、視圖、查詢結果的第X頁
對于表中主鍵或標識列的情況,直接從原表取數查詢，其它情況使用臨時表的方法
如果視圖或查詢結果中有主鍵,不推薦此方法
–鄒建 2003.09–*/
/*–調用示例
exec p_show ‘地區資料’
exec p_show ‘地區資料’,5,3,’地區編號,地區名稱,助記碼’,’地區編號’
–*/
/*
因為要顧及通用性,所以對帶排序的查詢語句有一定要求.如果先排序,再出結果.就是:
exec p_show ‘select top 100 percent * from 地區資料 order by 地區名稱’,5,3,’地區編號,地區名稱,助記碼’,’地區名稱’
–查詢語句加上:top 100 percent //top時
*/
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、視圖名、查詢語句
@PageSize int=10, –每頁的大小(行數)
@PageCurrent int=1, –要顯示的頁
@FdShow nvarchar (4000)=”, –要顯示的字段列表,如果查詢結果有標識字段,需要指定此值,且不包含標識字段
@FdOrder nvarchar (1000)=” –排序字段列表
as
declare @FdName nvarchar(250) –表中的主鍵或表、臨時表中的標識列名
,@Id1 varchar(20),@Id2 varchar(20) –開始和結束的記錄號
,@Obj_ID int –對象ID
–表中有復合主鍵的處理
declare @strfd nvarchar(2000) –復合主鍵列表
,@strjoin nvarchar(4000) –連接字段
,@strwhere nvarchar(2000) –查詢條件
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
–如果顯示第一頁，可以直接用top來完成
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,則檢查表中是否有標識更或主鍵
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 –如果表中無標識列,則檢查表中是否有主鍵
begin
if not exists(select 1 from sysobjects where parent_obj=@Obj_ID and xtype=’PK’)
goto lbusetemp –如果表中無主鍵,則用臨時表處理
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 –檢查表中的主鍵是否為復合主鍵
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
/*–使用標識列或主鍵為單一字段的處理方法–*/
lbuseidentity:
exec(‘select top ‘+@Id1+@FdShow+’ from ‘+@QueryStr
+’ where ‘+@FdName+’ not in(select top ‘
+@Id2+’ ‘+@FdName+’ from ‘+@QueryStr+@FdOrder
+’)’+@FdOrder
)
return
/*–表中有復合主鍵的處理方法–*/
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
/*–用臨時表處理的方法–*/
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
