villebro opened a new pull request, #30142:
URL: https://github.com/apache/superset/pull/30142

   ### SUMMARY
   Currently the `from_dttm` and `to_dttm` Jinja variables make it possible to 
reference the time range endpoints from within the Jinja context. However, they 
have some shortcomings:
   - `to_dttm` always points to the current day, even if there's no time range 
present in the query (this appears to be a quirk of how the `get_since_until` 
helper function works).
   - They are always formatted using the `.isoformat()` method. This means that 
it's difficult to use them for database-specific formatting that's readily 
available in `BaseEngineSpec.convert_dttm`.
   - It's impossible to access a specific time filter if there are multiple 
time filters present.
   - Lastly, in the case of virtual datasets, it's not possible to remove the 
time filter from the outer query (this is possible for regular filter types 
using the `filter_value and `get_filters` macros).
   
   This PR adds a new Jinja macro called `get_time_filter`, which returns a 
dataclass with the following properties:
   - `since`: The start endpoint of the time range
   - `until`: The end of the time range
   - `time_range`: The (usually) human readable raw value of the time filter
   
   TODO: more to come
   
   ### BEFORE/AFTER SCREENSHOTS OR ANIMATED GIF
   TODO: more to come
   
   ### TESTING INSTRUCTIONS
   <!--- Required! What steps can be taken to manually verify the changes? -->
   
   ### ADDITIONAL INFORMATION
   <!--- Check any relevant boxes with "x" -->
   <!--- HINT: Include "Fixes #nnn" if you are fixing an existing issue -->
   - [ ] Has associated issue:
   - [ ] Required feature flags:
   - [ ] Changes UI
   - [ ] Includes DB Migration (follow approval process in 
[SIP-59](https://github.com/apache/superset/issues/13351))
     - [ ] Migration is atomic, supports rollback & is backwards-compatible
     - [ ] Confirm DB migration upgrade and downgrade tested
     - [ ] Runtime estimates and downtime expectations provided
   - [ ] Introduces new feature or API
   - [ ] Removes existing feature or API
   


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