Ville Brofeldt 34407e8962 Make timestamp expression native SQLAlchemy element (#7131) ...

* Add native sqla component for time expressions

* Add unit tests and remove old tests

* Remove redundant _grains_dict method

* Clarify time_grain logic

* Add docstrings and typing

* Fix flake8 errors

* Add missing typings

* Rename to TimestampExpression

* Remove redundant tests

* Fix broken reference to db.database_name due to refactor

2019-05-30 08:28:37 +03:00

9.6 KiB

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