decommission desktop_active_dau

[relud]

this is actively used by one query https://sql.telemetry.mozilla.org/queries/52720/source which needs to be updated to pick up the changes at https://github.com/mozilla/stmo_core_product_metrics/pull/21

[akkomar]

this is actively used by one query https://sql.telemetry.mozilla.org/queries/52045/source#138916

You mean this one: https://sql.telemetry.mozilla.org/queries/52720/source ? @mreid-moz - do you need this query?

[relud]

oops, my bad. yes, that one.

[akkomar]

this is actively used by one query https://sql.telemetry.mozilla.org/queries/52045/source#138916

You mean this one: https://sql.telemetry.mozilla.org/queries/52720/source ? @mreid-moz - do you need this query?

This query is used in the dashboard linked from MDC. @mreid-moz emailed MDC team about this today.

[mreid-moz]

I think it should be safe to switch 52720 to use the more modern "exact mau" tables for this query, though I would prefer to drop it altogether if I can verify that they're no longer needed in MDC.

[mreid-moz]

I checked, and this query is linked to from MDC, so we should update it to used the exact_* tables.

[relud]

I double-checked the results of the query before and after using exact active mau, and the graphs look almost identical, exact is just smoother, so i went ahead and updated the query. this PR should now be safe to merge.