I've read that although SQL is meant to be standardised, it is implemented different etc with different databases. I have only ever used MySQL for databases.
What I would like to know is what other databases share the same syntax? I am using PDO now, and I would like to set a flag to allow the user to specify which database they would like to use.
I would be interested in knowing which are the 'safe' databases that will handle most (if not all) my general MySQL queries. Mainly SELECT, INSERT, UPDATE, DROP, DELETE.