Hi all! I'm new to Calcite community and first of all I'd like to thank you for great job done. I'd like to contribute Translate (expression, from_string, to_string) function support as mentioned in JIRA https://issues.apache.org/jira/browse/CALCITE-1115 I've submitted pull request https://github.com/apache/calcite/pull/225 and will be grateful if somebody can review it.
Kind regards Javanshir
