Re: Polymorphic arguments and composite types

Jeff Davis <pgsql@j-davis.com> writes:
> You could do something like:
> SELECT * FROM c AS c1, c AS c2 WHERE ARRAY[c1.col1] <@ ANY(SELECT c2.col2);

Good point --- actually he could convert it back to the original
subselect style, as long as he's using the correct operator:

SELECT * FROM c WHERE ARRAY[col1] <@ ANY(SELECT col2 FROM c);

The one-element-array trick seems a bit awkward though.  I wonder
why we don't have an "anyelement <@ anyarray" kind of operator...
        regards, tom lane