cloud-fan commented on issue #23308: [SPARK-26308][SQL] Infer abstract decimal type for java/scala BigDecimal URL: https://github.com/apache/spark/pull/23308#issuecomment-447846277 > Anyway, I don't think your suggestion is feasible because we still need to keep the implicit casting functionality. implicit casting is done by type coercion rules, why can't we do it if we also add a type coercion rule for ScalaUDF?
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