I have a MySQL database that include a timestamp field, designed to set
to NOW() whenever I update another field in that record (updates are
done manually by me, using phpmyadmin).
The purpose of this database is to track some fundraising a group I'm in
does, so the updates are typically when a donor sends a contribution in,
and the purpose of the timestamp field is to show when each donor's last
contribution was recorded.
I'd like to NOT have the timestamp field update sometimes, for example,
if I'm merely changing someone's email address or mailing address -
really, anything ...