Precision::<usize>::{add, sub, multiply}: avoid overflows #17929
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Use saturating operations, if the operation saturates,
Exact
is changed toInexact
Note this is not consistent with
Precision::<ScalarValue>
that wraps, happy to change behavior to wrapping here too if considered more relevant (but for cardinality estimations, saturation seems to make more sense to me).Which issue does this PR close?
Precision::multiply
overflow #17928.Rationale for this change
Avoid panics on large number of joins in debug mode that explode estimated cardinalities.