I've given it further thought...
I'm assuming from your original question you don't have goofy alphanumerics in your rows. You might try this on the CHAR column...
SELECT * FROM TABLENAME
WHERE COLUMNNAME LIKE ALL ('%0%', '%1%', '%2%', '%3%', '%4%', '%5%', '%6%', '%7%', '%8%', '%9%', '%0%')...