Hello, I have just faced with a question: what calendar is used by Flink tableAPI/sql? For instance there was a TIMESTAMPADD related issue [1] with references to MySql documentation. However there are some contradictions like: from one side there is a testTimestampAdd[2] in Flink which expects 1017-11-29 after adding -1000 years. From the other side there is MySql documentation about their calendar [3] and result of the same query 1017-12-05T22:58:58.998 vs expected by Flink's test 2017-11-29 22:58:58.998
Should it be treated as an issue or just another calendar usage (without Gregorian cutover e.g.)? [1] https://issues.apache.org/jira/browse/FLINK-6811 [2] https://github.com/apache/flink/blob/505dca174128ebb3bf765778ee36d58f680d6a1e/flink-libraries/flink-table/src/test/scala/org/apache/flink/table/expressions/ScalarFunctionsTest.scala#L2166 [3] https://dev.mysql.com/doc/refman/5.5/en/mysql-calendar.html Best regards, Sergey
