Working with auto increment IDs about dapper.fsharp

[JordanMarr]

Your primary key fields should not be optional.
I don’t think any database even allow setting a nullable field as the PK.

Use InsertOutputAsync to return the generated id field value.

[Dzoukr]

I see this part is missing in the documentation so if you would @Slesa send a PR with some description for *OutputAsync methods, it may help others for next time.

[Slesa]

Well I would like to, but... maybe it is because of monday, or I am too slow in thinking in general :)
When I use Order with Id set, I get the error 'Can not set explicit value on identity'. When I use an OrderDto w/o Id field, I cannot persist as it is a table of Orders, not OrderDtos. And I could not access the Id field anyway...

PS: @JordanMarr is right, the Id field cannot be optional

I bet it has sth to do with the Persons.View.generate in the tests somehow...