villebro commented on issue #4770: Cannot display Time Series Line Chart URL: https://github.com/apache/incubator-superset/issues/4770#issuecomment-385163919 I am also facing the same issue with Snowflake. I tracked it down to `process_data` in `viz.py` https://github.com/apache/incubator-superset/blob/caa72675a5b69e0ba133a3e652e1f807e0163d9c/superset/viz.py#L1104-L1107, where the groupby columns in `self.form_data` are upper case, but the corresponding name in `df` is lowercase. I was also able to confirm that the @jhettler hack works in my case. A simple hack in the code would be to do the matching case insensitive. Any alternative suggestions?
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