MySQL – combining two columns into one

I needed to combine the strings in columnA with columnB into a new column -- columnC. After Googling for quite awhile, I finally figured out how to do it:

UPDATE table SET columnC = CONCAT(columnA,'',columnB);

Note: To separate the two values in columnC (as in a First Name + Last Name scenario), all you'd do is put a space between the two ticks -- i.e., ' '