Great that it's not fundamental - and hopefully with this discovery, the
probability you mentioned is being squashed towards zero a bit more :-)
Don't let this early bug detract from what is really a superb piece of work!
regards
Mark
Tom Lane wrote:
In any case this isn't a fundamental bug, just an insufficiently
smart safety check. But thanks for finding it! As is, the code has
a nonzero probability of failure in the field :-( and I don't know
how we'd have tracked it down without a reproducible test case.
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TIP 9: the planner will ignore your desire to choose an index scan if your
joining column's datatypes do not match
