[0-9] won't work

[Billy Yard]

I tried the query (with mysql and query browser and control center) 

select * from disk where code like 'bs[0-9]%' and i get an empty set.  There should be a
lot of records.

when I try

select * from disks where code like 'bs0%' i get a result set.

The query works fine in MS SQL Server.  Is this a bug In MySQL?

The version is 4.0.18nt