On Tue, Jul 19, 2011 at 5:06 PM, Stefan Keller <sfkeller@xxxxxxxxx> wrote: > 2011/7/19 Robert Haas <robertmhaas@xxxxxxxxx>: >> 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 -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
