mistercrunch edited a comment on issue #9045:
URL:
https://github.com/apache/incubator-superset/issues/9045#issuecomment-636429672
@willbarrett, @gbrian is not referring to `SQLALCHEMY_DATABASE_URI`, but to
the ones ones that we encrypt and store in the database.
I'm not sure how well that is documented, but with `DB_CONNECTION_MUTATOR`
(a configuration hook) you can intercept the `Database` at runtime and do
whatever, meaning you can put in bogus username/password in the database, and
your `DB_CONNECTION_MUTATOR` function can read an env var and replace the
proper value.
```python
# in your superset_config.py
def DB_CONNECTION_MUTATOR(sqlalchemy_url, params, effective_username,
security_manager, source):
# Assuming that by convention your `sqlalchemy_url` references the env
var you want to use
sqlalchemy_url = os.environ.get(sqlalchemy_url)
return sqlalchemy_url, params
```
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