lemmy/migrations/2021-01-27-202728_active_us.../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_;