| From: | Thomas Lockhart <lockhart(at)fourpalms(dot)org> |
|---|---|
| To: | Tatsuo Ishii <t-ishii(at)sra(dot)co(dot)jp> |
| Cc: | josh(at)agliodbs(dot)com, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: Object Oriented Features |
| Date: | 2002-06-29 01:14:17 |
| Message-ID: | 3D1D09E9.77E1C605@fourpalms.org |
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| Thread: | |
| Lists: | pgsql-hackers |
> > > OO in PostgreSQL means that you can create own operators, datetypes,
> > functions...
> > Last I checked, all of these things were part of the SQL spec. I believe our
> > only "OO" functionality is inheritance ... which I have yet to find a use
> > for.
> Can you tell me what the SQL99 spec says regarding creation of
> operators? I couldn't find them.
I haven't gone back and looked, but I recall that the spec makes some
mention of operators in the context of defining new functions. I don't
think there is anything about defining operators not already in SQL, but
only (if anything at all) about extending existing operators to new data
types.
- Thomas
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