rumbin commented on issue #8411: Add support for database engine SAP Hana URL: https://github.com/apache/incubator-superset/pull/8411#issuecomment-547567484 FYI: There seems to be a bug when filtering on BOOLEAN values: There seems to be no way to enter the boolean value other than in a custom WHERE clause. When using the Filters field in Explore View with Filter Select enabled, it displays the `0` and `1` as available values, but won't let you actually pick and confirm one of them, since the Save button is grayed-out:  When trying the same using a Filter Chart in a Dashboard, the value 0 or 1 is selectable, but the filtered charts contain no data, since the SQL query contains a WHERE predicate like `AND my_boolean_column IN (NULL)` instead of e.g. `AND my_boolean_column IN (true)`.  I.e., the conversion of HANA's true/false to its representation as 1/0 in Python and back to SQL code is not working as it should, yet. I don't know if such issues are supposed to be fixed in the initial PR, or if things like this may get addressed later on...
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