3-22 记录

//投票更新方法（效率高）

declare @ptid int
declare @ptnumb varchar(10)
declare cursor1 cursor for        
select ptid,ptnumb from tb_photo1 where pttype=2 and ptrq <>0 
open cursor1                      

fetch next from cursor1 into @ptid,@ptnumb 

while @@fetch_status=0         
begin
update tb_photo1 set ptrq=
(select count(id) from tb_toupiao1 where ptid=@ptid)
+
((select count(id) from tb_uservote where worksid=''+ptnumb+'')*5) where ptid=@ptid
fetch next from cursor1 into @ptid,@ptnumb 
end

close cursor1                  
deallocate cursor1

 

 

======================================================================

 

下面这个垃圾，运行了6个多小时，竟然还没完事。

declare @ptid int
declare @ptrq int
declare @i int
declare cursor1 cursor for         --定义游标cursor1
select ptid,ptrq from tb_photo            --使用游标的对象(跟据需要填入select文)
open cursor1                       --打开游标

fetch next from cursor1 into @ptid,@ptrq  --将游标向下移1行，获取的数据放入之前定义的变量@id,@name中

while @@fetch_status=0           --判断是否成功获取数据
begin
update tb_photo set ptrq=ptrq-(
select
(select count(id) from tb_toupiao1 where ptid=@ptid)-
(select count(*)
from(
select count(id) as id
from tb_toupiao1
where ptid = @ptid
group by convert(varchar(16),addtime,120),usid) a)) where ptid=@ptid
                    --进行相应处理(跟据需要填入SQL文)

fetch next from cursor1 into @ptid,@ptrq  --将游标向下移1行
end

close cursor1                   --关闭游标
deallocate cursor1