Re: Returning the name of a primary key

Juan Pablo Espino <jp.espino@gmail.com> writes:
> I need to write a function that retrieve the name of at least one
> table primary key, if it exists.  The only argument passed to the
> function is the table name.  I have thought something like this:

You need to be searching the list of indexes, not the attributes per se.
ATExecDropNotNull() might be a useful example.
        regards, tom lane