godfreyhe opened a new pull request #10196: [FLINK-14789] [table-planner-blink] extends max/min type in ColumnStats from Number to Comparable URL: https://github.com/apache/flink/pull/10196 ## What is the purpose of the change *extends max/min type in ColumnStats from Number to Comparable the help planner to find a better plan if a query has predicate on non-number column(e.g. date, time, timestamp)* ## Brief change log - *change max/min type from Number to Comparable in ColumnStats* - *convert max/min info in CatalogColumnStatisticsDataDate to ColumnStats* ## Verifying this change This change added tests and can be verified as follows: - *Updated SelectivityEstimatorTest for selectivity on Boolean, Date, Time, Timestamp, String column* - *Updated CatalogStatisticsTest for date max/min* ## Does this pull request potentially affect one of the following parts: - Dependencies (does it add or upgrade a dependency): (yes / **no**) - The public API, i.e., is any changed class annotated with `@Public(Evolving)`: (yes / **no**) - The serializers: (yes / **no** / don't know) - The runtime per-record code paths (performance sensitive): (yes / **no** / don't know) - Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Yarn/Mesos, ZooKeeper: (yes / **no** / don't know) - The S3 file system connector: (yes / **no** / don't know) ## Documentation - Does this pull request introduce a new feature? (yes / **no**) - If yes, how is the feature documented? (not applicable / docs / JavaDocs / **not documented**)
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