EvilDrW opened a new issue #17927:
URL: https://github.com/apache/superset/issues/17927
## [SIP-77] Proposal for Traversing Hierarchical Data ("Drill Down")
### Motivation
Many data sets have a natural hierarchy. When viewing these data sets, a
common user request is to apply filters for each tier of the hierarchy
iteratively. While superset provides accommodations to define these filters,
the available methods are far from intuitive. A more appropriate user
interaction would be:
1. Display only values for the highest tier in the hierarchy
2. User clicks one of the displayed values
3. Superset filters based on the selected value
4. Return to #1, showing only values for the next tier
### Proposed Change
The proposed feature will provide an "enable drill down" check box on the
control panels for all compatible chart types. Examples of possible compatible
charts include pie, bar, tree maps, etc. When selected, the feature will use
the column names in the "group by" field, in the order that they appear, as the
data hierarchy. The iteratively selected filters will, as usual, be applied
across all charts in the current filter scope (tab, dashboard page, etc.). The
current state of the "drill down" will be tracked in the chart's OwnState
object, as necessary.
For a demonstration of the proposed change on a pie chart, see the videos on
https://github.com/apache/superset/pull/14688
### New or Changed Public Interfaces
The only change to the interfaces, as envisioned, is the addition of the
"enable drill down" checkbox to appropriate charts' control panels.
### New dependencies
n/a
### Migration Plan and Compatibility
n/a
### Rejected Alternatives
n/a
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