...which is why some of us stick to the SQL standard wherever possible, only gritting our teeth and cursing the database vendors, lo, unto the seventh generation, in those rare cases in which we have no choice but to blight ourselves and our code with their proprietary extensions.

And then there are those who use ORMs to abstract it all away.

Perhaps I just don't get heavy enough into the database side, but I find it pretty easy to write only cross-platform SQL.