godfrey he created FLINK-14789:
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Summary: extends max/min type in ColumnStats from Number to
Comparable
Key: FLINK-14789
URL: https://issues.apache.org/jira/browse/FLINK-14789
Project: Flink
Issue Type: Sub-task
Components: Table SQL / Planner
Reporter: godfrey he
Fix For: 1.10.0
Many tpc-ds queries have predicates on date, like `d_date between '1999-02-01'
and (cast('1999-02-01' as date) + INTERVAL '60' day)`, It's very useful to find
a better plan if the planner knows the max/min values of date. However, max/min
in {{ColumnStats}} only support {{Number}} type currently. This issue aims to
extend max/min type from {{Number}} to {{Comparable}}, and then {{Date}},
{{Time}}, {{Timestamp}} even {{String}} could be supported.
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