大家好，在此麻烦咨询大家一些简单的问题

我现在在处理一些数据，可是stata显示空间不足了，需要drop一些变量或者更改memory，但是我已经设置到最大了，怎么办？

以下是相关语句
> "
variable sfxmbm does not uniquely identify observations in the master data
no room to add more variables due to width
    An attempt was made to add a variable that would have increased the memory
    required to store an observation beyond what is currently possible.  You
    have the following alternatives:
     1.  Store existing variables more efficiently; see help compress.
     2.  Drop some variables or observations; see help drop.  (Think of Stata's
         data area as the area of a rectangle; Stata can trade off width and
         length.)
     3.  Increase the amount of memory allocated to the data area using the set
         memory command; see help memory.
r(902);



我不太想删除变量，也不太想删除以前处理的数据，大家有什么经验吗？



在此表示非常感谢了！