Marthin Laubscher <postg...@lobeshare.co.za> writes:
> But now I need to (re)define MyType to support type modifiers (e.g.
> MyType(1,14,18)) and I got that done using CREATE TYPE’s TYPMOD_IN and
> TYPMOD_OUT parameters resulting in the correct packed value getting stored in
> pg_attribute when I define a column of that type.
OK ...
> But when I pass a MyType value to a function defined in my C extension how
> would I access the type modifier value for the argument which could have been
> drawn from the catalog or the result of a cast.
You can't. Whatever info is needed by operations on the type had
better be embedded in the value.
regards, tom lane
