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Re: Re: 7.2 items

From: Philip Warner <pjw(at)rhyme(dot)com(dot)au>
To: Peter Eisentraut <peter_e(at)gmx(dot)net>, Hannu Krosing <hannu(at)tm(dot)ee>
Cc: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>, Thomas Swan <tswan(at)olemiss(dot)edu>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Re: 7.2 items
Date: 2001-06-27 23:25:37
Message-ID: 3.0.5.32.20010628092537.0364f100@mail.rhyme.com.au (view raw or flat)
Thread:
Lists: pgsql-hackers
At 23:55 27/06/01 +0200, Peter Eisentraut wrote:
>Hannu Krosing writes:
>
>> > > Is there an ISO/ANSI SQL interface to BLOB's defined someplace ?
>> >
>> > It's basically no different from regular character strings, i.e.,
>> > substring(), position(), ||, etc.
>>
>> So no standard seek/read/write type interface ?
>
>SQL is not a procedural language, so this has to be expected.
>

Wouldn't this logic also imply that there would be no cursor positioning?
No update cursors etc? seek, read, write don't seem that different to
MOVE/FETCH/UPDATE.

You also missed out mentioning the character overlay functions (which I
don't think we have), that allow updates of parts of BLOBs.


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