Chunwei Lei created CALCITE-4223:
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Summary: Introducing column statistics to RelOptTable
Key: CALCITE-4223
URL: https://issues.apache.org/jira/browse/CALCITE-4223
Project: Calcite
Issue Type: Improvement
Reporter: Chunwei Lei
Many systems depend on column statistics to compute more accurate stats, such
as NDV, average column size, and so on. It would be nice if Calcite can provide
such an interface.
Column statistics might include NDV, average/max column length, number of
nulls, number of trues, number of falses and so on.
What do you think?
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