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An outer join appearing within the RHS of an antijoin can't commute with the antijoin, but somehow I missed teaching make_outerjoininfo() about that. In Teodor Sigaev's recent trouble report, this manifests as a "could not find RelOptInfo for given relids" error within eqjoinsel(); but I think silently wrong query results are possible too, if the planner misorders the joins and doesn't happen to trigger any internal consistency checks. It's broken as far back as we had antijoins, so back-patch to all supported branches. |
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