On Tue, Jul 19, 2011 at 5:06 PM, Stefan Keller <sfkeller@gmail.com> wrote:
> 2011/7/19 Robert Haas <robertmhaas@gmail.com>:
>> Putting the elements in order wouldn't really help, would it? I mean,
>> you'd need some kind of an index inside the hstore... which there
>> isn't.
>
> Sorry for my inprecise question. In fact elements of a hstore are
> stored in order of (keylength,key) with the key comparison done
> bytewise (not locale-dependent). See e.g. function hstoreUniquePairs
> in http://doxygen.postgresql.org/ . This ordered property is being
> used by some hstore functions but not all - and I'm still wondering
> why.
Not sure, honestly. Is there some place where it would permit an
optimization we're not currently doing?
--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
