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Posted to dev@calcite.apache.org by "Vladimir Sitnikov (Jira)" <ji...@apache.org> on 2020/09/02 18:05:00 UTC

[jira] [Created] (CALCITE-4215) Ensure org.apache.calcite.schema.Statistic uses null vs emptyList appropriately

Vladimir Sitnikov created CALCITE-4215:
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             Summary: Ensure org.apache.calcite.schema.Statistic uses null vs emptyList appropriately
                 Key: CALCITE-4215
                 URL: https://issues.apache.org/jira/browse/CALCITE-4215
             Project: Calcite
          Issue Type: Sub-task
          Components: core
    Affects Versions: 1.25.0
            Reporter: Vladimir Sitnikov


null: statistic is *not* *known*
emptyList: statistic is *known*, and the value is *empty* (e.g. no unique keys in the table)



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