初级存储过程（游标）

SET QUOTED_IDENTIFIER ON
GO
SET ANSI_NULLS ON
GO

---先传1，2，3，4
ALTER   PROCEDURE [dbo].[cw_MedicalDatalist121]
@subj_code   varchar(20),       ---分类ID号,
@start_time  nvarchar(50),  ---开始时间
@end_time nvarchar(50)  ---结束时间

AS
BEGIN

 declare @name varchar(20),@code nvarchar(50),@amount Numeric(38)

 if(@start_time is null and @end_time is null)
 begin
  if exists (select * from cw_subject where (LEFT(subj_code, LEN(@subj_code)) = @subj_code) and
    (LEN(subj_code) = LEN(@subj_code) + 1))  
  begin
  
   select subj_code,subj_name,0 as amount into #result
   from cw_subject
   where (LEFT(subj_code, LEN(@subj_code)) = @subj_code) and
    (LEN(subj_code) = LEN(@subj_code) + 1)
   order by  subj_code;
  
  
   DECLARE cw_subject_view CURSOR FOR
   select * from #result 
  
   OPEN cw_subject_view;
  
   fetch next from cw_subject_view into @code,@name,@amount
  
   while(@@fetch_status=0)
     begin
  
     select @amount=sum(amount) from cw_MedicalData
     where (LEFT(subj_code, LEN(@code)) = @code)
    if(@amount is not null)
     begin
      update #result set amount =@amount where subj_code=@code
     end
   
       fetch next from cw_subject_view into @code,@name,@amount
     end
  
   close cw_subject_view
   deallocate cw_subject_view
  
   select * from  #result;
   drop table #result;
  end
  
  else
  begin
   if exists (select * from cw_MedicalData where subj_code=@subj_code)
   begin
    select a.subj_code,a.subj_name,b.amount,b.tabler,b.summary
    from cw_subject a,cw_MedicalData b
    where a.subj_code=b.subj_code and a.subj_code=@subj_code
   end
   else
   begin
    select subj_code,subj_name,0 as amount,null as tabler,null as summary
    from cw_subject
    where subj_code=@subj_code
    
   end
  
  end
 end 
 else
 begin
  if exists (select * from cw_subject where (LEFT(subj_code, LEN(@subj_code)) = @subj_code) and
    (LEN(subj_code) = LEN(@subj_code) + 1))
  begin
   select subj_code,subj_name,0 as amount into #result2
   from cw_subject
   where (LEFT(subj_code, LEN(@subj_code)) = @subj_code) and
    (LEN(subj_code) = LEN(@subj_code) + 1) and subj_code in (select cw_MedicalData.subj_code
   from cw_MedicalData ,cw_DataTime  where cw_MedicalData.tally_no=cw_DataTime.tally_no and cw_DataTime.tally_date>=@start_time and cw_DataTime.tally_date<=@end_time)
   order by  subj_code;
   
   
   DECLARE cw_subject_view CURSOR FOR
   select * from #result2 
   
   OPEN cw_subject_view;
   
   fetch next from cw_subject_view into @code,@name,@amount
   
   while(@@fetch_status=0)
   begin
   
    select @amount=sum(amount) from cw_MedicalData
    where (LEFT(subj_code, LEN(@code)) = @code) and subj_code in (select cw_MedicalData.subj_code
    from cw_MedicalData ,cw_DataTime  where cw_MedicalData.tally_no=cw_DataTime.tally_no and cw_DataTime.tally_date>=@start_time and cw_DataTime.tally_date<=@end_time)
    if(@amount is not null)

    begin
     update #result2 set amount =@amount where subj_code=@code
    end
    
    fetch next from cw_subject_view into @code,@name,@amount
   end
   
   close cw_subject_view
   deallocate cw_subject_view
   
   select * from  #result2;
   drop table #result2;
  end 
  else
  begin
   if exists (select * from cw_MedicalData where subj_code=@subj_code)
   begin
    select a.subj_code,a.subj_name,b.amount,b.tabler,b.summary
    from cw_subject a,cw_MedicalData b
    where a.subj_code=b.subj_code and a.subj_code=@subj_code and a.subj_code in (select cw_MedicalData.subj_code
    from cw_MedicalData ,cw_DataTime  where cw_MedicalData.tally_no=cw_DataTime.tally_no and cw_DataTime.tally_date>=@start_time and cw_DataTime.tally_date<=@end_time)
   end
   else
   begin
    select subj_code,subj_name,0 as amount,null as tabler,null as summary
    from cw_subject
    where subj_code=@subj_code and subj_code in (select cw_MedicalData.subj_code
    from cw_MedicalData ,cw_DataTime  where cw_MedicalData.tally_no=cw_DataTime.tally_no and cw_DataTime.tally_date>=@start_time and cw_DataTime.tally_date<=@end_time)
     
   end
   
  end
 end 
END

 

 

GO
SET QUOTED_IDENTIFIER OFF
GO
SET ANSI_NULLS ON
GO