Re: Oracle MINUS is not supported

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От Tom Lane
Тема Re: Oracle MINUS is not supported
Дата
Msg-id 16955.984247982@sss.pgh.pa.us
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Ответ на Re: Oracle MINUS is not supported  (Bruce Momjian <pgman@candle.pha.pa.us>)
Ответы Re: Oracle MINUS is not supported  (Bruce Momjian <pgman@candle.pha.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.

            regards, tom lane

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