date - null casted to integer?
Hi!
Excuse me, if this been discussed before, but following thing seems to
me a little bit strange:
select '2009-01-12'::date - null::date < '1 day'::interval;
ERROR: operator does not exist: integer < interval
LINE 1: select '2009-11-12'::date - null::date < '1 day'::interval;
^
HINT: No operator matches the given name and argument type(s). You
might need to add explicit type casts.
select ('2009-11-12'::date - null::date)::interval < '1 day'::interval;
ERROR: cannot cast type integer to interval
LINE 1: select ('2009-11-12'::date - null::date)::interval < '1 day'...
server 8.3.5 It's really not a problem in queries, but could became a
real pain with plpgsql. I'm not sure, but it seems to me that any
operation with null should product null from the standart's point of view?
Thank you beforehand
--
MRJ
Ups, sorry, I'm idiot... changes from the default casting to text is
really helpful in clearing brain bugs...
Роман Маширов wrote:
Show quoted text
Hi!
Excuse me, if this been discussed before, but following thing seems to
me a little bit strange:select '2009-01-12'::date - null::date < '1 day'::interval;
ERROR: operator does not exist: integer < interval
LINE 1: select '2009-11-12'::date - null::date < '1 day'::interval;
^
HINT: No operator matches the given name and argument type(s). You
might need to add explicit type casts.select ('2009-11-12'::date - null::date)::interval < '1 day'::interval;
ERROR: cannot cast type integer to interval
LINE 1: select ('2009-11-12'::date - null::date)::interval < '1 day'...server 8.3.5 It's really not a problem in queries, but could became a
real pain with plpgsql. I'm not sure, but it seems to me that any
operation with null should product null from the standart's point of
view?Thank you beforehand
--
MRJ