"Robert Haas" <robertmhaas@gmail.com> writes:
> That doesn't seem to work, because IS NOT DISTINCT FROM is not an
> operator.
Yah :-(
> So then I tried creating an operator === (anyelement,
> anyelement) that just does IS NOT DISTINCT FROM and writing:
> select 1 === any(array[1]);
> which got me:
> ERROR: could not find array type for data type anyelement
FWIW, it seems to work in 8.3.
regards, tom lane