/*
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:
execp_show'selecttop100percent*from地区资料orderby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:top100percent//top时
*/
ifexists(select*fromdbo.sysobjectswhereid=object_id(N'[dbo].[p_show]')andOBJECTPROPERTY(id,N'IsProcedure')=1)
dropprocedure[dbo].[p_show]
GO
CreateProcp_show
@QueryStrnvarchar(4000),--表名、视图名、查询语句
@PageSizeint=10,--每页的大小(行数)
@PageCurrentint=1,--要显示的页
@FdShownvarchar(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
@FdOrdernvarchar(1000)=''--排序字段列表
as
declare@FdNamenvarchar(250)--表中的主键或表、临时表中的标识列名
,@Id1varchar(20),@Id2varchar(20)--开始和结束的记录号
,@Obj_IDint--对象ID
--表中有复合主键的处理
declare@strfdnvarchar(2000)--复合主键列表
,@strjoinnvarchar(4000)--连接字段
,@strwherenvarchar(2000)--查询条件

select@Obj_ID=object_id(@QueryStr)
,@FdShow=caseisnull(@FdShow,'')when''then'*'else''+@FdShowend
,@FdOrder=caseisnull(@FdOrder,'')when''then''else'orderby'+@FdOrderend
,@QueryStr=casewhen@Obj_IDisnotnullthen''+@QueryStrelse'('+@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(@PageSizeasvarchar(20))
exec('selecttop'+@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_IDisnotnullandobjectproperty(@Obj_ID,'IsTable')=1
begin
select@Id1=cast(@PageSizeasvarchar(20))
,@Id2=cast((@PageCurrent-1)*@PageSizeasvarchar(20))
select@FdName=namefromsyscolumnswhereid=@Obj_IDandstatus=0x80
if@@rowcount=0--如果表中无标识列,则检查表中是否有主键
begin
ifnotexists(select1fromsysobjectswhereparent_obj=@Obj_IDandxtype='PK')
gotolbusetemp--如果表中无主键,则用临时表处理
select@FdName=namefromsyscolumnswhereid=@Obj_IDandcolidin(
selectcolidfromsysindexkeyswhere@Obj_ID=idandindidin(
selectindidfromsysindexeswhere@Obj_ID=idandnamein(
selectnamefromsysobjectswherextype='PK'andparent_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+'anda.['+name+']=b.['+name+']'
,@strwhere=@strwhere+'andb.['+name+']isnull'
fromsyscolumnswhereid=@Obj_IDandcolidin(
selectcolidfromsysindexkeyswhere@Obj_ID=idandindidin(
selectindidfromsysindexeswhere@Obj_ID=idandnamein(
selectnamefromsysobjectswherextype='PK'andparent_obj=@Obj_ID
)))
select@strfd=substring(@strfd,2,2000)
,@strjoin=substring(@strjoin,5,4000)
,@strwhere=substring(@strwhere,5,4000)
gotolbusepk
end
end
end
else
gotolbusetemp

lbuseidentity:
exec('selecttop'+@Id1+@FdShow+'from'+@QueryStr
+'where'+@FdName+'notin(selecttop'
+@Id2+''+@FdName+'from'+@QueryStr+@FdOrder
+')'+@FdOrder
)
return

lbusepk:
exec('select'+@FdShow+'from(selecttop'+@Id1+'a.*from
(selecttop100percent*from'+@QueryStr+@FdOrder+')a
leftjoin(selecttop'+@Id2+''+@strfd+'
from'+@QueryStr+@FdOrder+')bon'+@strjoin+'
where'+@strwhere+')a'
)
return

lbusetemp:
select@FdName='[ID_'+cast(newid()asvarchar(40))+']'
,@Id1=cast(@PageSize*(@PageCurrent-1)asvarchar(20))
,@Id2=cast(@PageSize*@PageCurrent-1asvarchar(20))
exec('select'+@FdName+'=identity(int,0,1),'+@FdShow+'
into#tbfrom'+@QueryStr+@FdOrder+'
select'+@FdShow+'from#tbwhere'+@FdName+'between'
+@Id1+'and'+@Id2
)
GO