lemmy/migrations/2023-08-09-101305_user_instance_block/up.sql

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CREATE TABLE instance_block (
id serial PRIMARY KEY,
person_id int REFERENCES person ON UPDATE CASCADE ON DELETE CASCADE NOT NULL,
instance_id int REFERENCES instance ON UPDATE CASCADE ON DELETE CASCADE NOT NULL,
published timestamptz NOT NULL DEFAULT now(),
UNIQUE (person_id, instance_id)
);
ALTER TABLE post_aggregates
ADD COLUMN instance_id integer REFERENCES instance ON UPDATE CASCADE ON DELETE CASCADE;
CREATE OR REPLACE FUNCTION post_aggregates_post ()
RETURNS TRIGGER
LANGUAGE plpgsql
AS $$
BEGIN
IF (TG_OP = 'INSERT') THEN
INSERT INTO post_aggregates (post_id, published, newest_comment_time, newest_comment_time_necro, community_id, creator_id, instance_id)
SELECT
NEW.id,
NEW.published,
NEW.published,
NEW.published,
NEW.community_id,
NEW.creator_id,
community.instance_id
FROM
community
WHERE
NEW.community_id = community.id;
ELSIF (TG_OP = 'DELETE') THEN
DELETE FROM post_aggregates
WHERE post_id = OLD.id;
END IF;
RETURN NULL;
END
$$;
UPDATE
post_aggregates
SET
instance_id = community.instance_id
FROM
post
JOIN community ON post.community_id = community.id
WHERE
post.id = post_aggregates.post_id;
ALTER TABLE post_aggregates
ALTER COLUMN instance_id SET NOT NULL;