| From: | Ivan Radovanovic <radovanovic(at)gmail(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Adrian Klaver <adrian(dot)klaver(at)gmail(dot)com>, Michael Paquier <michael(dot)paquier(at)gmail(dot)com>, Bruce Momjian <bruce(at)momjian(dot)us>, PostgreSQL mailing lists <pgsql-general(at)postgresql(dot)org> |
| Subject: | Re: Getting list of supported types in Postgres |
| Date: | 2013-08-15 15:23:03 |
| Message-ID: | 520CF257.9000000@gmail.com |
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| Lists: | pgsql-general |
On 08/15/13 17:15, Tom Lane napisa:
> Ivan Radovanovic<radovanovic(at)gmail(dot)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
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