tbf GP went, You really have to know this going in. If you have to support both, you'll probably have to write two versions of your SQL. That is, the problem i

tbf GP went, You really have to know this going in. If you have to support both, you'll probably have to write two versions of your SQL. That is, the problem isn't just the ORM but the very different characteristics of the databases behind the ORM. Any serious production app and I bet no one is touching that config. Especially, if it has been running for months with one db or the other. And now, you're stuck with an extra database and a ORM.