Re: Proposal: CREATE CONVERSION

From: Tatsuo Ishii <t-ishii(at)sra(dot)co(dot)jp>
To: tgl(at)sss(dot)pgh(dot)pa(dot)us
Cc: pgsql-hackers(at)postgresql(dot)org
Subject: Re: Proposal: CREATE CONVERSION
Date: 2002-07-05 15:33:30
Message-ID: 20020706.003330.59668263.t-ishii@sra.co.jp
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> > CREATE CONVERSION <conversion name>
> > SOURCE <source encoding name>
> > DESTINATION <destination encoding name>
> > FROM <conversion function name>
>
> Doesn't a conversion currently require several support functions?
> How much overhead will you be adding to funnel them all through
> one function?

No, only one function is sufficient. What else do you think of?

> Basically I'd like to see a spec for the API of the conversion
> function...

That would be very simple (the previous example I gave was unnecessary
complex). The function signature would look like:

conversion_funcion(TEXT) RETURNS TEXT

It receives source text and converts it then returns it. That's all.

> Also, is there anything in SQL99 that we ought to try to be
> compatible with?

As far as I know there's no such an equivalent in SQL99.
--
Tatsuo Ishii

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