On 08/15/13 17:15, Tom Lane napisa:
> Ivan Radovanovic<radovanovic@gmail.com> writes:
>> Thanks Adrian, but question was how to decide which types are indexable
>
> A little bit of research in the system-catalogs documentation will show
> you how to find the types that can be accepted by some index opclass
> (hint: "pg_opclass.opcintype::regtype").
>
> As far as the other question goes, you could look for types that have a
> pg_type.typmodin function -- though I'm not sure whether you want to
> consider every possible usage of typmods as being a "precision".
>
> regards, tom lane
Thanks Tom, I will take type definitions from documentation (as Adrian
suggested), and it looks like your pg_opclass suggestion will solve
indexability question. Case closed I guess :-)
Regards,
Ivan
