John Scalia <jayknowsunix@gmail.com> writes:
> Sorry if I wasn't clear. Every version I found did include that
> operator, but there were differences in how they were defined. In the 1.1
> version the arguments for "||" were listed as being public.hstore while in
> 1.3 the args were just hstore.
I'm beginning to suspect you have a rogue copy of hstore someplace.
Try "\dT *.hstore" to see if you get more than one hit.
regards, tom lane