SqlServer游标中使用continue的注意事项

declare @userid int --用户id

declare cur_uid Cursor for select userid from tb_user 
Open cur_uid
Fetch Next From cur_uid into @userid
While(@@Fetch_Status = 0)
Begin
     Begin
 if(@userid=123456)
 begin
 Fetch Next From cur_uid into @userid --continue之前必须Fetch Next，否则会死循环
 continue;
 end
 --执行select、insert等业务操作   
 --。。。
     End
     Fetch Next From cur_uid into @userid
End
Close cur_uid
Deallocate cur_uid

即：

continue之前必须Fetch Next，否则会死循环