Re: pgsql: If an index depends on no columns of its table, give it a

Simon Riggs <simon@2ndquadrant.com> writes:
> I had understood the discussion to conclude that indexes that do not
> depend on any column of the table to not be allowed at all.

That was my first reaction too, but the point about unique-index behavior
refutes it.  Constraining a table to have at most one row is useful.

            regards, tom lane