Github user felixcheung commented on the pull request:
https://github.com/apache/incubator-zeppelin/pull/667#issuecomment-177823526
I've tested it a bit, it seems to work - to reproduce the bug, do I need to
have multiple, or valid propertyKey?
For example, I type a random one and it does not complain:
```
%jdbc (blah)
select max(code) as ok, min(title) as t from films2 group by code, did,
kind;
```
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