Github user ramkrish86 commented on the pull request:
https://github.com/apache/flink/pull/1821#issuecomment-205139553
I have done the changes only to support the String concat operation. The
cast() and abs() grammar change looks more complex and I need to understand
things better in parser to support it. Suggest we do it in a seperate JIRA? Is
that fine @tillrohrmann ?
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