Split string by regex

Hello, I'm working on a library OPAC system with books classified using the Library of Congress classification system. This takes the format of either one or two letters followed by some numbers, i.e. R272 or RA440 etc. What I want to do is split the field that holds this classification into

RE: Split string by regex

@lists.mysql.com Subject: Split string by regex Hello, I'm working on a library OPAC system with books classified using the Library of Congress classification system. This takes the format of either one or two letters followed by some numbers, i.e. R272 or RA440 etc. What I want to do is split the field