Summary: We want to allow grouping by on expressions, including the
ability to select expressions (without group-by). The UI ain't good yet
.. it is not at the feature parity of say adhoc filters/metrics that
come with a nice text-box to edit the SQL. But
this suffices for my usecase for now.
(The UI would have to be redone ... but that would require some refactoring
to merge the AdhocFilter/Metric/Popover stuff such that it can be used
for this use case too.)
Also fixed a bug in the SelectControl freeForm selection.
Allow selecting all columns easily: Added a new Select-All special item
that users can select to make all the options in the selectable show
up.
The ability to group by arbitrary expressions is useful because now two
users don't need to create custom computed-fields for this.
fc4042a28b