Re: Oracle MINUS is not supported

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От Bruce Momjian
Тема Re: Oracle MINUS is not supported
Дата
Msg-id 200103101818.NAA22929@candle.pha.pa.us
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Ответ на Re: Oracle MINUS is not supported  (Tom Lane <tgl@sss.pgh.pa.us>)
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> Bruce Momjian <pgman@candle.pha.pa.us> writes:
> > we would rather have a pass over the queries before they reach our
> > grammar.  The pass would restructure any Oracle-specific syntax into
> > PostgreSQL syntax.
>
> More specifically, a separate program to convert Oracle-isms into
> Postgres-isms (and, perhaps, MySQL-isms, DB2-isms, ...).  Feed it
> a script, get a new script back.
>
> Do we have a TODO list entry for this?  I don't see it offhand.
> I do see something about an SQL*Net listener, which would probably
> need to run this sort of conversion on-the-fly, but ISTM the first
> step ought to be a simple script converter.

Added now:

    * Convert non-Ansi feature to PostgreSQL features

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