What’s missing? Find out using OUTER JOIN’s in MySQL with examples.

What’s missing? What matches in one table but not another? MySQL (and SQL in general) have a way to find out. More than likely, when working with a normalized database, you are faced with these types of questions. Querying multiple tables with JOIN‘s on matched values, only goes so far to answering this type of question. We will see how to leverage an OUTER JOIN, for these requests.