ambition119 edited a comment on issue #96: support from unix timestamp to string date URL: https://github.com/apache/calcite-avatica/pull/96#issuecomment-491651747 @julianhyde Currently I am a developer of the hadoop ecosystem, because we are most familiar with hive SQL, and there are already many Hive sql production tasks. Now we want to use Hive sql as the standard (so existing SQL tasks can be run without changes), running in Spark, Flink or Drill. Because calcite supports ANSI sql, many of them do not support well, such as [create funcation](https://github.com/apache/calcite/pull/908), [load date sql statement](https://issues.apache.org/jira/browse/CALCITE-2735) (I PR code not merge), and sql function like from_timestamp() ([hive UDFFromUnixTime](https://github.com/apache/hive/blob/master/ql/src/java/org/apache/hadoop/hive/ql/udf/UDFFromUnixTime.java)). At present, I have done a lot of work in the middle of the interception layer. I saw that Calcite has discussed the support of dialects like Hive. Can the submitted code be used?
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