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(shù))
@PageCurrent int=1, --要顯示的頁
@FdShow nvarchar (4000)='', --要顯示的字段列表,如果查詢結(jié)果有標(biāo)識字段,需要指定此值,且不包含標(biāo)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(biāo)識列名
,@Id1 varchar(20),@Id2 varchar(20) --開始和結(jié)束的記錄號
,@Obj_ID int --對象ID
--表中有復(fù)合主鍵的處理
declare @strfd nvarchar(2000) --復(fù)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(biāo)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(biāo)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(fù)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(biāo)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(fù)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 )