Hi!
Other (besides text literal from my previous message)
condition when we have
ERROR: failed to find conversion function from "unknown" to ..
is usage of null.
When I invoke
select 1 where 5 in (null)
everything is Ok,
though when I try
select 1 where 5 in (select null)
I get
ERROR: failed to find conversion function from "unknown" to integer.
Is it desired behavior or subject to change
in future versions of PG?
Thanks.
--
Best regards
Ilja Golshtein