Github user HeartSaVioR commented on the issue:
https://github.com/apache/storm/pull/1714
I don't want to get blocked by non-SQL standard support unless we have
clear use case or clear way to implement it. If my understanding is right, both
Spark and Flink seems not support this as well, and also Samza SQL too.
When this gets merged into master, I expect Storm SQL will support most of
SQL reference page on Calcite. We can add tests for checking features
availability and document supported features, and it could take some time.
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