How to change "Time Grain" in Superset
I am trying to create a time series chart in Superset using a field named "created_at" which is a timestamp. But in the Superset interface, I can't change the "Time Grain" at all but created_at was picked up automatically.
Any idea how to resolve this issue? I wanted to draw a daily timeseries chart.
Solution
It was a connection string issue. postgresql+psycopg2 should be used instead of postgresql
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