ccoffline edited a comment on issue #4581:
URL:
https://github.com/apache/incubator-doris/issues/4581#issuecomment-690133817
`-1=-1` or other True expr will turn into a `BoolLiteral` which
`selectivity` = -1.
`tag_id in (-1)` `selectivity` = 0.1.
So in the or `CompoundPredicate`, `selectivity` will be set to -1.
> if (getChild(0).selectivity == -1 || children.size() == 2 &&
getChild(1).selectivity == -1) {
// give up if we're missing an input
selectivity = -1;
return;
}
If remove any of these expresstions, `SelectNode.computeStats` will not be
executed.
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