On Jul23, 2011, at 01:12 , Robert Haas wrote:
> On Fri, Jul 22, 2011 at 6:04 PM, Joey Adams <joeyadams3.14159@gmail.com> wrote:
>> On another matter, should the JSON type guard against duplicate member
>> keys? The JSON RFC says "The names within an object SHOULD be
>> unique," meaning JSON with duplicate members can be considered valid.
>> JavaScript interpreters (the ones I tried), PHP, and Python all have
>> the same behavior: discard the first member in favor of the second.
>> That is, {"key":1,"key":2} becomes {"key":2}. The XML type throws an
>> error if a duplicate attribute is present (e.g. '<a href="b"
>> href="c"/>'::xml).
>
> Hmm. That's tricky. I lean mildly toward throwing an error as being
> more consistent with the general PG philosophy.
I'm usually all for throwing an error on ambiguous input - but if Javascript,
PHP and Python all agree, it might be wise to just yield to them.
best regards,
Florian Pflug