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Implement statistics estimation for partition columns #1186

@rdettai

Description

@rdettai

Is your feature request related to a problem or challenge? Please describe what you are trying to do.
The ability to read partitioned tables is added the the ListingTable in #1141. As partitions are constant columns, we could estimate their statistics pretty accurately (currently they are left as Default.

Describe the solution you'd like
Replace default with a column statistics that has:

  • min value
  • max value
  • distinct count
  • null number as 0

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