Aleksey Plekhanov created IGNITE-27433:
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Summary: Calcite engine. Improve rows count estimation for filter
on unique column
Key: IGNITE-27433
URL: https://issues.apache.org/jira/browse/IGNITE-27433
Project: Ignite
Issue Type: Improvement
Reporter: Aleksey Plekhanov
Assignee: Aleksey Plekhanov
In case of equality filter on unique columns (primary key) we now estimate row
count as 0.15 * total rows count. But in this case query will return no more
then 1 row. We can improve planning if rows count will be estimated more
precisely.
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