Stefan, Why would you do that ? If you need a solution which works both on postgres and oracle, use the standard outer join syntax supported by postgres - it is supported by the latest oracle versions too. We do this here successfully... Cheers, Csaba. On Wed, 2006-04-05 at 14:46, Stefan Nobis wrote: > Hi. > > Is there any way (or working solution) to extend PostgreSQL to accept > Oracles outer join syntax with '(+)'? > > Any pointers to docs on how to do this myself are also appreciated.