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[docs faq] how do I add new columns to an existing table (#2888)

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Maxime Beauchemin 2017-06-04 18:02:10 -07:00 committed by GitHub
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@ -124,3 +124,16 @@ __ https://www.sqlite.org/lockingv3.html
One work around is to create a symlink from ~/.superset to a directory located on a non-NFS partition.
Another work around is to change where superset stores the sqlite database by adding ``SQLALCHEMY_DATABASE_URI = 'sqlite:////new/localtion/superset.db'`` in superset_config.py (create the file if needed), then adding the directory where superset_config.py lives to PYTHONPATH environment variable (e.g. ``export PYTHONPATH=/opt/logs/sandbox/airbnb/``).
How do I add new columns to an existing table
---------------------------------------------
Table schemas evolve, and Superset needs to reflect that. It's pretty common
in the life cycle of a dashboard to want to add a new dimension or metric.
To get Superset to discover your new columns, all you have to do is to
go to ``Menu -> Sources -> Tables``, click the ``edit`` icon next to the
table who's schema has changed, and hit ``Save`` from the ``Detail`` tab.
Behind the scene, the new columns will get merged it. Following this,
you may want to
re-edit the table afterwards to configure the ``Column`` tab, check the
appropriate boxes and save again.