I'd like to add the autoIncrement property for a numeric column in SORM. How do I do that?
There is no way to configure this in SORM and there's a reason: in practice auto-increment property is only needed for id-columns, and SORM manages ids for you.
If you're, however, absolutely sure that you need this, you can always let SORM generate the schema and then alter such details according to your needs with db-administration tool. But again, I'm sure that you're approaching the problem incorrectly. What do you need that for?