Ivan Voras wrote:
> On 27/01/2008, tomas@tuxteam.de <tomas@tuxteam.de> wrote:
>
>
>> On Sat, Jan 26, 2008 at 07:32:35PM +0100, Ivan Voras wrote:
>>
>>> Andrew Dunstan wrote:
>>>
>> [...]
>>
>>>> Or you could use an hstore (see contrib).
>>>>
>>> Doesn't seem applicable.
>>>
>> Have a closer look: it might :-)
>>
>
> I found these documents on hstore:
>
> http://developer.postgresql.org/pgdocs/postgres/hstore.html
> http://www.sai.msu.su/~megera/wiki/Hstore
>
> >From them, it seems "hstore" is another datatype (as in:
> 'a=>b'::hstore), which sounds good (though if it was me I'd have
> picked a different name for it, like "dict" or "hashmap" :) ) for
> storing both field names and their values, but I don't see a way to
> convert a row/record passed to a trigger to a hstore.
>
>
>
It's trivial to do in a plperl trigger, since it gets the new and old
records as hashes with the field names as keys.
cheers
andrew