if exists (select * from dbo.sysobjects where id = object_id(n'[dbo].[sp_paging]') and objectproperty(id, n'isprocedure') = 1)
drop procedure [dbo].[sp_paging]
goset quoted_identifier on
goset ansi_nulls on
go/*-----------------------------------
功能：取表、檢視、查詢語句的分頁結果
說明：檢視、查詢語句存在自增列主鍵時，不推薦這種方法
呼叫示例:
exec sp_paging 'select * from employees',3,3,'lastname,firstname','employeeid desc'
exec sp_paging 'employees',3,3,'lastname,firstname','employeeid desc'
-----------------------------------*/
create proc sp_paging
@querystr nvarchar(4000), --表名、檢視名、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
asdeclare @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 --物件id
--表中有復合主鍵的處理
declare @strfd nvarchar(2000) --復合主鍵列表
,@strjoin nvarchar(4000) --連線字段
,@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
endend
endelse
goto lbusetemp
--使用標識列或主鍵為單一欄位的處理方法
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
)print('select '+@fdname+'=identity(int,0,1),'+@fdshow+'
into #tb from'+@querystr+@fdorder+'
select '+@fdshow+' from #tb where '+@fdname+' between '
+@id1+' and '+@id2)
goset quoted_identifier off
goset ansi_nulls on
go
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