HyukjinKwon commented on issue #25022: [SPARK-24695][SQL] Move `CalendarInterval` to org.apache.spark.sql.types package URL: https://github.com/apache/spark/pull/25022#issuecomment-514472372 Let's file a JIRA for each. 1. SQL parser side: we need a change like this https://github.com/apache/spark/pull/25189/commits/e7e2f5bc2c88958fb672d133b55e8c01b7298f40#diff-9847f5cef7cf7fbc5830fbc6b779ee10R1929 2. Python side: - see https://github.com/apache/spark/blob/master/python/pyspark/sql/types.py#L45-L94 We need to define the interval type class and should support presumably time delta in Python - need to check if this works with Python serde. Let's say how it works with Python UDF. See https://github.com/apache/spark/blob/master/sql/core/src/main/scala/org/apache/spark/sql/execution/python/EvaluatePython.scala 3. R side: - R side does not have type class instances IIRC. So we wouldn't need to define the class - However, we should still fix R serde side as well. Presumably `difftime` instances might have to be matched with interval type in SQL sides. See https://github.com/apache/spark/blob/master/core/src/main/scala/org/apache/spark/api/r/SerDe.scala and https://github.com/apache/spark/blob/master/R/pkg/R/types.R
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