Type Alias: ActivityGroupBy

ActivityGroupBy = typeof ActivityGroupBy[keyof typeof ActivityGroupBy]

Defined in: packages/sdk/src/types/generated/activity_feed.ts:405

What an aggregate line is a line of.

WORKSPACE and EVENT_TYPE are columns on the rollup, so neither costs a join — the activities database has no tenancy table to join against anyway. FAMILY is a pure function of the event_type column (:func:lib.activity.families.family_of), so it is arithmetic over the same rows in the same pass, exactly like every other view above the one materialized grain.

WORKSPACE_FAMILY is the only two-axis grouping, and it exists because the surface's front door needs both halves of one sentence: "Study A — 8 member changes · 3 conversations". Naming a workspace without saying what happened in it is the reading that was rejected; saying what happened without naming the workspace is unusable at org scope, where a row belongs to one of many clinics. One axis cannot say both, and asking twice and joining client-side would put a second aggregation — with its own pagination — in the browser.

It is deliberately the only composite. A general n-axis grouping would need a general keyset over an n-tuple and a general drill ladder, for a second combination nobody has asked for.