On 02/26/2015 03:55 AM, Tim Smith wrote:
Hi,
As far as I'm aware, JSON has no data types as such, and so why is
Postgres (9.4.1) attempting to impose its own nonsense constraints ?
Surely it should just insert the word 'infinity' into the JSON output,
just like it displays in a simple SQL query ?
It did:
test=> select version();
version
-----------------------------------------------------------------------------------------------------------------------------
PostgreSQL 9.3.6 on i686-pc-linux-gnu, compiled by gcc (SUSE Linux)
4.8.1 20130909 [gcc-4_8-branch revision 202388], 32-bit
(1 row)
test=> select to_json(row('infinity'::date));
to_json
-------------------
{"f1":"infinity"}
(1 row)
seems to have changed:
test=# select version();
version
-----------------------------------------------------------------------------------------------------------------------------
PostgreSQL 9.4.1 on i686-pc-linux-gnu, compiled by gcc (SUSE Linux)
4.8.1 20130909 [gcc-4_8-branch revision 202388], 32-bit
(1 row)
test=# select to_json(row('infinity'::date));
ERROR: date out of range
DETAIL: JSON does not support infinite date values.
so will have to wait until the question Andres posed is answered.
create table app_test.foo(a text,b date,c date,d boolean);
create view app_test.bar as select * from app_test.foo where
b<=now()::date and c>=now()::date and d=true;
insert into app_test.foo(a,b,c,d) values ('zzz','2014-12-31','2014-02-01',true);
insert into app_test.foo(a,b,c,d) values ('zzz','2015-02-01','infinity',true);
foobar=> select * from app_test.bar where a='zzz' order by c asc limit 1;
a | b | c | d
-----+------------+----------+---
zzz | 2015-02-01 | infinity | t
(1 row)
CREATE FUNCTION app_test.foobar(p_a text) RETURNS json AS $$
DECLARE
v_row app_test.bar%ROWTYPE;
v_json json;
BEGIN
select * into strict v_row from app_test.bar where a=p_a order by c asc limit 1;
select row_to_json(v_row) into v_json;
return v_json;
END;
$$ LANGUAGE plpgsql;
foobar=> select app_test.foobar('zzz');
ERROR: date out of range
DETAIL: JSON does not support infinite date values.
CONTEXT: SQL statement "select row_to_json(v_row)"
PL/pgSQL function app_test.foobar(text) line 7 at SQL statement
--
Adrian Klaver
adrian.klaver@xxxxxxxxxxx
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