Calculate precise cardinality upper bounds (backport of #61529) #61754
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This reworks `CardinalityUpperBound` to support precise estimates while maintaining most of the public API. This will allow us to make more informed choices about the data structures that we use in aggregations. None of those interesting choices come as part of this change, but they are more possible with it.
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This reworks
CardinalityUpperBoundto support precise estimates whilemaintaining most of the public API. This will allow us to make more
informed choices about the data structures that we use in aggregations.
None of those interesting choices come as part of this change, but they
are more possible with it.