mirror of
https://github.com/LemmyNet/lemmy.git
synced 2024-06-25 00:30:33 +00:00
113 lines
3.1 KiB
PL/PgSQL
113 lines
3.1 KiB
PL/PgSQL
-- Add user aggregates
|
|
create table user_aggregates (
|
|
id serial primary key,
|
|
user_id int references user_ on update cascade on delete cascade not null,
|
|
post_count bigint not null,
|
|
post_score bigint not null,
|
|
comment_count bigint not null,
|
|
comment_score bigint not null,
|
|
unique (user_id)
|
|
);
|
|
|
|
insert into user_aggregates (user_id, post_count, post_score, comment_count, comment_score)
|
|
select u.id,
|
|
coalesce(pd.posts, 0),
|
|
coalesce(pd.score, 0),
|
|
coalesce(cd.comments, 0),
|
|
coalesce(cd.score, 0)
|
|
from user_ u
|
|
left join (
|
|
select p.creator_id,
|
|
count(distinct p.id) as posts,
|
|
sum(pl.score) as score
|
|
from post p
|
|
left join post_like pl on p.id = pl.post_id
|
|
group by p.creator_id
|
|
) pd on u.id = pd.creator_id
|
|
left join (
|
|
select c.creator_id,
|
|
count(distinct c.id) as comments,
|
|
sum(cl.score) as score
|
|
from comment c
|
|
left join comment_like cl on c.id = cl.comment_id
|
|
group by c.creator_id
|
|
) cd on u.id = cd.creator_id;
|
|
|
|
|
|
-- Add user aggregate triggers
|
|
-- post count
|
|
create function user_aggregates_post_count()
|
|
returns trigger language plpgsql
|
|
as $$
|
|
begin
|
|
IF (TG_OP = 'INSERT') THEN
|
|
update user_aggregates
|
|
set post_count = post_count + 1 where user_id = NEW.user_id;
|
|
ELSIF (TG_OP = 'DELETE') THEN
|
|
update user_aggregates
|
|
set post_count = post_count - 1 where user_id = OLD.user_id;
|
|
END IF;
|
|
return null;
|
|
end $$;
|
|
|
|
create trigger user_aggregates_post_count
|
|
after insert or delete on post
|
|
execute procedure user_aggregates_post_count();
|
|
|
|
-- post score
|
|
create function user_aggregates_post_score()
|
|
returns trigger language plpgsql
|
|
as $$
|
|
begin
|
|
IF (TG_OP = 'INSERT') THEN
|
|
update user_aggregates
|
|
set post_score = post_score + NEW.score where user_id = NEW.user_id;
|
|
ELSIF (TG_OP = 'DELETE') THEN
|
|
update user_aggregates
|
|
set post_score = post_score - OLD.score where user_id = OLD.user_id;
|
|
END IF;
|
|
return null;
|
|
end $$;
|
|
|
|
create trigger user_aggregates_post_score
|
|
after insert or delete on post_like
|
|
execute procedure user_aggregates_post_score();
|
|
|
|
-- comment count
|
|
create function user_aggregates_comment_count()
|
|
returns trigger language plpgsql
|
|
as $$
|
|
begin
|
|
IF (TG_OP = 'INSERT') THEN
|
|
update user_aggregates
|
|
set comment_count = comment_count + 1 where user_id = NEW.user_id;
|
|
ELSIF (TG_OP = 'DELETE') THEN
|
|
update user_aggregates
|
|
set comment_count = comment_count - 1 where user_id = OLD.user_id;
|
|
END IF;
|
|
return null;
|
|
end $$;
|
|
|
|
create trigger user_aggregates_comment_count
|
|
after insert or delete on comment
|
|
execute procedure user_aggregates_comment_count();
|
|
|
|
-- comment score
|
|
create function user_aggregates_comment_score()
|
|
returns trigger language plpgsql
|
|
as $$
|
|
begin
|
|
IF (TG_OP = 'INSERT') THEN
|
|
update user_aggregates
|
|
set comment_score = comment_score + NEW.score where user_id = NEW.user_id;
|
|
ELSIF (TG_OP = 'DELETE') THEN
|
|
update user_aggregates
|
|
set comment_score = comment_score - OLD.score where user_id = OLD.user_id;
|
|
END IF;
|
|
return null;
|
|
end $$;
|
|
|
|
create trigger user_aggregates_comment_score
|
|
after insert or delete on comment_like
|
|
execute procedure user_aggregates_comment_score();
|