don't use typing with ServerDefaultType

[zzzeek]

The server default is any expression that is passed as DDL
to the database and these usually don't have SQL types explicitly
stated.

With the code as is, pylance is complaining about this:

Column(DateTime(), server_default=func.now())

and requiring I do this:

Column(DateTime(), server_default=func.now(type_=DateTime))

people don't need to do that, server_defaults SQL type always comes
from the column type and doesn't normally need to be stated.

Also, column_server_default.py was importing "functions as func",
which is wrong. "func" is not a module it's a namespace object,
fixed that.

[CaselIT]

I think you need to update the tests

[zzzeek]

i looked, wasnt sure

[zzzeek]

oh its this:

# EXPECTED_MYPY: Cannot infer type argument 1 of "Column"
d = Column(Boolean, server_default=func.now(), nullable=False)

yeah, i dunno, that's a weird mistake not very real world. like if server_default does have a type, then sure, but literally pylance is not working with the actual func.now() because I guess we dont have that in the stubs. so i think ill remove that case.

[zzzeek]

yeah that test case was only working because func was pointing to the functions module, which is also not how it's done

[CaselIT]

if you like you can publish

[zzzeek]

ooh w the button ???

[CaselIT]

Yep

[zzzeek]