DonnyZone commented on issue #1899: [CALCITE-3898] RelOptPredicateList may generate incorrect map of cons… URL: https://github.com/apache/calcite/pull/1899#issuecomment-610343242 Hi @danny0405, I noticed the `decimalOf` method in `RelDataTypeFactory` is mainly used for the JavaType, which returns unspecified `precision` and `scale`. One trouble thing is that we always need to cope with the `JavaType` specifically when an issue involves type precision and scale. Could we implement `getPrecision()` and `getScale()` in `JavaType`?
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