MySQL UPDATE a column value with add or subtract

A numerical value in a MySQL database table, needs to be updated by adding or subtracting a value. This can be done with a simple MySQL query.

MYSQL Select values containing any UpperCase characters

I recently had a problem searching for values containing any uppercase characters in a MYSQL database. I had this little query but with no luck.

MySQL Function Tips

Here are some tips that can really be helpful for MYSQL queries for quick reference. Including Database control functions and the like.