DBA tips & tricks: SQL’s version of JS’s callback hell. Substituting OR for IN.

A quick round-up of my favorite tips & tricks for database administration! If there is a difference in method /query structure between T-SQL, Postgres or MySQL I will make sure to point it out. The assumption is that the version of SQL is current to the date of this posting.

What is OR good for? Absolutely nothing!

By those who have not been blessed by Edwin Starr’s classic “War”, video at the bottom of this page. It has nothing to do with SQL…