lemmy/migrations/2021-01-27-202728_active_users_monthly/up.sql

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-- Add monthly and half yearly active columns for site and community aggregates
-- These columns don't need to be updated with a trigger, so they're saved daily via queries
alter table site_aggregates add column users_active_day bigint not null default 0;
alter table site_aggregates add column users_active_week bigint not null default 0;
alter table site_aggregates add column users_active_month bigint not null default 0;
alter table site_aggregates add column users_active_half_year bigint not null default 0;
alter table community_aggregates add column users_active_day bigint not null default 0;
alter table community_aggregates add column users_active_week bigint not null default 0;
alter table community_aggregates add column users_active_month bigint not null default 0;
alter table community_aggregates add column users_active_half_year bigint not null default 0;
create or replace function site_aggregates_activity(i text)
returns int
language plpgsql
as
$$
declare
count_ integer;
begin
select count(*)
into count_
from (
select c.creator_id from comment c
inner join user_ u on c.creator_id = u.id
where c.published > ('now'::timestamp - i::interval)
and u.local = true
union
select p.creator_id from post p
inner join user_ u on p.creator_id = u.id
where p.published > ('now'::timestamp - i::interval)
and u.local = true
) a;
return count_;
end;
$$;
update site_aggregates
set users_active_day = (select * from site_aggregates_activity('1 day'));
update site_aggregates
set users_active_week = (select * from site_aggregates_activity('1 week'));
update site_aggregates
set users_active_month = (select * from site_aggregates_activity('1 month'));
update site_aggregates
set users_active_half_year = (select * from site_aggregates_activity('6 months'));
create or replace function community_aggregates_activity(i text)
returns table(count_ bigint, community_id_ integer)
language plpgsql
as
$$
begin
return query
select count(*), community_id
from (
select c.creator_id, p.community_id from comment c
inner join post p on c.post_id = p.id
where c.published > ('now'::timestamp - i::interval)
union
select p.creator_id, p.community_id from post p
where p.published > ('now'::timestamp - i::interval)
) a
group by community_id;
end;
$$;
update community_aggregates ca
set users_active_day = mv.count_
from community_aggregates_activity('1 day') mv
where ca.community_id = mv.community_id_;
update community_aggregates ca
set users_active_week = mv.count_
from community_aggregates_activity('1 week') mv
where ca.community_id = mv.community_id_;
update community_aggregates ca
set users_active_month = mv.count_
from community_aggregates_activity('1 month') mv
where ca.community_id = mv.community_id_;
update community_aggregates ca
set users_active_half_year = mv.count_
from community_aggregates_activity('6 months') mv
where ca.community_id = mv.community_id_;