select question - Mailing list pgsql-sql

Hi all,

I have a table (mhs)  which fills as below :

nim
--------
94.31.0001
94.31.0002
95.31.0003
95.51.0004

then how can I get rows which meet with '94.31.xxxx'  (where x = don't
care)? I've already try :

 select * from mhs where nim likes '94.31';


with no success.

TIA

edhi