CREATE STREAM fails when field name is "group" about ksql HOT 3 CLOSED

@ftrossbach Thanks for trying KSQL and your feedback.
As you mentioned GROUP is a keyword in the grammar and cannot be used as column name. Although the quoted identifier is defined in the grammar we do not support it completely yet.
There are couple of ways you can use your JSON. Of course the easy way would be to change the column name to some thing like '_group'. If it is not possible you can use our EXTRACTJSONFIELD to extract the fields you need from JSON and create a new stream with acceptable column names.
Let me know if this works for you.

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Looking at the ANTLR grammar, quotes seem to be supported. Is it an issue that I try to assign sub json object to a string? The group element in Meetup's data is a json object with different field types. Somehow I assumed I just could use this and then use the JSONPath function to extract further data. I'm probably doing it wrong.

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Tracking in #677

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