mirror of https://github.com/LemmyNet/lemmy
Remove materialized views. (#908)
* One pass at materialized views, only about 30% faster, not good. * Before merging master to test out bans. * DB Rework working, still need more testing. * Fixing accidental addadmin bug from asonix async merge. * Fixing the comment delete trigger * Some more DB additions. - Adding a hot_rank desc, published desc index to post_aggregates_fast. - Removed WITH CTE queries in favor of direct selects (since CTEs cant use indexes) * Removing some unecessary indexes. * Some more DB optimizings - Changing the fast_id pkeys to just ids on the fast tables. - Removing the private_message_fast, since the view contains no aggregates. - Comment and post voting now no longer pull from the views, they update the counts directly. * Adding community_agg_view and post_agg_views Credit: eiknat. * Adding user and comment_view migrations. (comment_view still broken) * Adding more views. Credit Eiknat.pull/917/head
parent
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commit
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-- Dropping all the fast tables
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drop table user_fast;
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drop view post_fast_view;
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drop table post_aggregates_fast;
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drop view community_fast_view;
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drop table community_aggregates_fast;
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drop view reply_fast_view;
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drop view user_mention_fast_view;
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drop view comment_fast_view;
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drop table comment_aggregates_fast;
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-- Re-adding all the triggers, functions, and mviews
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-- private message
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create materialized view private_message_mview as select * from private_message_view;
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create unique index idx_private_message_mview_id on private_message_mview (id);
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-- Create the triggers
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create or replace function refresh_private_message()
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returns trigger language plpgsql
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as $$
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begin
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refresh materialized view concurrently private_message_mview;
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return null;
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end $$;
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create trigger refresh_private_message
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after insert or update or delete or truncate
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on private_message
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for each statement
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execute procedure refresh_private_message();
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-- user
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create or replace function refresh_user()
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returns trigger language plpgsql
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as $$
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begin
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refresh materialized view concurrently user_mview;
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refresh materialized view concurrently comment_aggregates_mview; -- cause of bans
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refresh materialized view concurrently post_aggregates_mview;
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return null;
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end $$;
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drop trigger refresh_user on user_;
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create trigger refresh_user
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after insert or update or delete or truncate
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on user_
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for each statement
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execute procedure refresh_user();
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drop view user_view cascade;
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create view user_view as
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select
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u.id,
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u.actor_id,
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u.name,
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u.avatar,
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u.email,
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u.matrix_user_id,
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u.bio,
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u.local,
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u.admin,
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u.banned,
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u.show_avatars,
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u.send_notifications_to_email,
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u.published,
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(select count(*) from post p where p.creator_id = u.id) as number_of_posts,
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(select coalesce(sum(score), 0) from post p, post_like pl where u.id = p.creator_id and p.id = pl.post_id) as post_score,
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(select count(*) from comment c where c.creator_id = u.id) as number_of_comments,
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(select coalesce(sum(score), 0) from comment c, comment_like cl where u.id = c.creator_id and c.id = cl.comment_id) as comment_score
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from user_ u;
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create materialized view user_mview as select * from user_view;
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create unique index idx_user_mview_id on user_mview (id);
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-- community
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drop trigger refresh_community on community;
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create trigger refresh_community
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after insert or update or delete or truncate
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on community
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for each statement
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execute procedure refresh_community();
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create or replace function refresh_community()
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returns trigger language plpgsql
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as $$
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begin
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refresh materialized view concurrently post_aggregates_mview;
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refresh materialized view concurrently community_aggregates_mview;
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refresh materialized view concurrently user_mview;
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return null;
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end $$;
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drop view community_aggregates_view cascade;
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create view community_aggregates_view as
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-- Now that there's public and private keys, you have to be explicit here
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select c.id,
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c.name,
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c.title,
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c.description,
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c.category_id,
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c.creator_id,
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c.removed,
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c.published,
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c.updated,
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c.deleted,
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c.nsfw,
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c.actor_id,
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c.local,
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c.last_refreshed_at,
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(select actor_id from user_ u where c.creator_id = u.id) as creator_actor_id,
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(select local from user_ u where c.creator_id = u.id) as creator_local,
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(select name from user_ u where c.creator_id = u.id) as creator_name,
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(select avatar from user_ u where c.creator_id = u.id) as creator_avatar,
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(select name from category ct where c.category_id = ct.id) as category_name,
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(select count(*) from community_follower cf where cf.community_id = c.id) as number_of_subscribers,
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(select count(*) from post p where p.community_id = c.id) as number_of_posts,
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(select count(*) from comment co, post p where c.id = p.community_id and p.id = co.post_id) as number_of_comments,
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hot_rank((select count(*) from community_follower cf where cf.community_id = c.id), c.published) as hot_rank
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from community c;
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create materialized view community_aggregates_mview as select * from community_aggregates_view;
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create unique index idx_community_aggregates_mview_id on community_aggregates_mview (id);
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create view community_view as
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with all_community as
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(
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select
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ca.*
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from community_aggregates_view ca
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)
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select
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ac.*,
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u.id as user_id,
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(select cf.id::boolean from community_follower cf where u.id = cf.user_id and ac.id = cf.community_id) as subscribed
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from user_ u
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cross join all_community ac
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union all
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select
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ac.*,
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null as user_id,
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null as subscribed
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from all_community ac
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;
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create view community_mview as
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with all_community as
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(
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select
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ca.*
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from community_aggregates_mview ca
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)
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select
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ac.*,
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u.id as user_id,
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(select cf.id::boolean from community_follower cf where u.id = cf.user_id and ac.id = cf.community_id) as subscribed
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from user_ u
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cross join all_community ac
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union all
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select
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ac.*,
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null as user_id,
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null as subscribed
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from all_community ac
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;
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-- Post
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drop view post_view;
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drop view post_aggregates_view;
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-- regen post view
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create view post_aggregates_view as
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select
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p.*,
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(select u.banned from user_ u where p.creator_id = u.id) as banned,
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(select cb.id::bool from community_user_ban cb where p.creator_id = cb.user_id and p.community_id = cb.community_id) as banned_from_community,
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(select actor_id from user_ where p.creator_id = user_.id) as creator_actor_id,
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(select local from user_ where p.creator_id = user_.id) as creator_local,
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(select name from user_ where p.creator_id = user_.id) as creator_name,
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(select avatar from user_ where p.creator_id = user_.id) as creator_avatar,
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(select actor_id from community where p.community_id = community.id) as community_actor_id,
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(select local from community where p.community_id = community.id) as community_local,
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(select name from community where p.community_id = community.id) as community_name,
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(select removed from community c where p.community_id = c.id) as community_removed,
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(select deleted from community c where p.community_id = c.id) as community_deleted,
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(select nsfw from community c where p.community_id = c.id) as community_nsfw,
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(select count(*) from comment where comment.post_id = p.id) as number_of_comments,
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coalesce(sum(pl.score), 0) as score,
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count (case when pl.score = 1 then 1 else null end) as upvotes,
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count (case when pl.score = -1 then 1 else null end) as downvotes,
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hot_rank(coalesce(sum(pl.score) , 0),
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(
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case when (p.published < ('now'::timestamp - '1 month'::interval)) then p.published -- Prevents necro-bumps
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else greatest(c.recent_comment_time, p.published)
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end
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)
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) as hot_rank,
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(
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case when (p.published < ('now'::timestamp - '1 month'::interval)) then p.published -- Prevents necro-bumps
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else greatest(c.recent_comment_time, p.published)
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end
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) as newest_activity_time
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from post p
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left join post_like pl on p.id = pl.post_id
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left join (
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select post_id,
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max(published) as recent_comment_time
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from comment
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group by 1
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) c on p.id = c.post_id
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group by p.id, c.recent_comment_time;
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create materialized view post_aggregates_mview as select * from post_aggregates_view;
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create unique index idx_post_aggregates_mview_id on post_aggregates_mview (id);
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create view post_view as
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with all_post as (
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select
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pa.*
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from post_aggregates_view pa
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)
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select
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ap.*,
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u.id as user_id,
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coalesce(pl.score, 0) as my_vote,
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(select cf.id::bool from community_follower cf where u.id = cf.user_id and cf.community_id = ap.community_id) as subscribed,
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(select pr.id::bool from post_read pr where u.id = pr.user_id and pr.post_id = ap.id) as read,
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(select ps.id::bool from post_saved ps where u.id = ps.user_id and ps.post_id = ap.id) as saved
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from user_ u
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cross join all_post ap
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left join post_like pl on u.id = pl.user_id and ap.id = pl.post_id
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union all
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select
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ap.*,
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null as user_id,
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null as my_vote,
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null as subscribed,
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null as read,
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null as saved
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from all_post ap
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;
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create view post_mview as
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with all_post as (
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select
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pa.*
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from post_aggregates_mview pa
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)
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select
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ap.*,
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u.id as user_id,
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coalesce(pl.score, 0) as my_vote,
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(select cf.id::bool from community_follower cf where u.id = cf.user_id and cf.community_id = ap.community_id) as subscribed,
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(select pr.id::bool from post_read pr where u.id = pr.user_id and pr.post_id = ap.id) as read,
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(select ps.id::bool from post_saved ps where u.id = ps.user_id and ps.post_id = ap.id) as saved
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from user_ u
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cross join all_post ap
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left join post_like pl on u.id = pl.user_id and ap.id = pl.post_id
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union all
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select
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ap.*,
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null as user_id,
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null as my_vote,
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null as subscribed,
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null as read,
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null as saved
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from all_post ap
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;
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drop trigger refresh_post on post;
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create trigger refresh_post
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after insert or update or delete or truncate
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on post
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for each statement
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execute procedure refresh_post();
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create or replace function refresh_post()
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returns trigger language plpgsql
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as $$
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begin
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refresh materialized view concurrently post_aggregates_mview;
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refresh materialized view concurrently user_mview;
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return null;
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end $$;
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-- User mention, comment, reply
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drop view user_mention_view;
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drop view comment_view;
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drop view comment_aggregates_view;
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-- reply and comment view
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create view comment_aggregates_view as
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select
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c.*,
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(select community_id from post p where p.id = c.post_id),
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(select co.actor_id from post p, community co where p.id = c.post_id and p.community_id = co.id) as community_actor_id,
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(select co.local from post p, community co where p.id = c.post_id and p.community_id = co.id) as community_local,
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(select co.name from post p, community co where p.id = c.post_id and p.community_id = co.id) as community_name,
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(select u.banned from user_ u where c.creator_id = u.id) as banned,
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(select cb.id::bool from community_user_ban cb, post p where c.creator_id = cb.user_id and p.id = c.post_id and p.community_id = cb.community_id) as banned_from_community,
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(select actor_id from user_ where c.creator_id = user_.id) as creator_actor_id,
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(select local from user_ where c.creator_id = user_.id) as creator_local,
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(select name from user_ where c.creator_id = user_.id) as creator_name,
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(select avatar from user_ where c.creator_id = user_.id) as creator_avatar,
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coalesce(sum(cl.score), 0) as score,
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count (case when cl.score = 1 then 1 else null end) as upvotes,
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count (case when cl.score = -1 then 1 else null end) as downvotes,
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hot_rank(coalesce(sum(cl.score) , 0), c.published) as hot_rank
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from comment c
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left join comment_like cl on c.id = cl.comment_id
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group by c.id;
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create materialized view comment_aggregates_mview as select * from comment_aggregates_view;
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create unique index idx_comment_aggregates_mview_id on comment_aggregates_mview (id);
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create view comment_view as
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with all_comment as
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(
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select
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ca.*
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from comment_aggregates_view ca
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)
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select
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ac.*,
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u.id as user_id,
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coalesce(cl.score, 0) as my_vote,
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(select cf.id::boolean from community_follower cf where u.id = cf.user_id and ac.community_id = cf.community_id) as subscribed,
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(select cs.id::bool from comment_saved cs where u.id = cs.user_id and cs.comment_id = ac.id) as saved
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from user_ u
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cross join all_comment ac
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left join comment_like cl on u.id = cl.user_id and ac.id = cl.comment_id
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union all
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select
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ac.*,
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null as user_id,
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null as my_vote,
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null as subscribed,
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null as saved
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from all_comment ac
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;
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create view comment_mview as
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with all_comment as
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(
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select
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ca.*
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from comment_aggregates_mview ca
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)
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select
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ac.*,
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u.id as user_id,
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coalesce(cl.score, 0) as my_vote,
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(select cf.id::boolean from community_follower cf where u.id = cf.user_id and ac.community_id = cf.community_id) as subscribed,
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(select cs.id::bool from comment_saved cs where u.id = cs.user_id and cs.comment_id = ac.id) as saved
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from user_ u
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cross join all_comment ac
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left join comment_like cl on u.id = cl.user_id and ac.id = cl.comment_id
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union all
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select
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ac.*,
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null as user_id,
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null as my_vote,
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null as subscribed,
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null as saved
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from all_comment ac
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;
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-- Do the reply_view referencing the comment_mview
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create view reply_view as
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with closereply as (
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select
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c2.id,
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c2.creator_id as sender_id,
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c.creator_id as recipient_id
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from comment c
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inner join comment c2 on c.id = c2.parent_id
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where c2.creator_id != c.creator_id
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-- Do union where post is null
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union
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select
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c.id,
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c.creator_id as sender_id,
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p.creator_id as recipient_id
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from comment c, post p
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where c.post_id = p.id and c.parent_id is null and c.creator_id != p.creator_id
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)
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select cv.*,
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closereply.recipient_id
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from comment_mview cv, closereply
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where closereply.id = cv.id
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;
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-- user mention
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create view user_mention_view as
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select
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c.id,
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um.id as user_mention_id,
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c.creator_id,
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c.creator_actor_id,
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c.creator_local,
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c.post_id,
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c.parent_id,
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c.content,
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c.removed,
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um.read,
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c.published,
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c.updated,
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c.deleted,
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c.community_id,
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c.community_actor_id,
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c.community_local,
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c.community_name,
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c.banned,
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c.banned_from_community,
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c.creator_name,
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c.creator_avatar,
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c.score,
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c.upvotes,
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c.downvotes,
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c.hot_rank,
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c.user_id,
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c.my_vote,
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c.saved,
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um.recipient_id,
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(select actor_id from user_ u where u.id = um.recipient_id) as recipient_actor_id,
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(select local from user_ u where u.id = um.recipient_id) as recipient_local
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from user_mention um, comment_view c
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where um.comment_id = c.id;
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create view user_mention_mview as
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with all_comment as
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(
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select
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ca.*
|
||||
from comment_aggregates_mview ca
|
||||
)
|
||||
|
||||
select
|
||||
ac.id,
|
||||
um.id as user_mention_id,
|
||||
ac.creator_id,
|
||||
ac.creator_actor_id,
|
||||
ac.creator_local,
|
||||
ac.post_id,
|
||||
ac.parent_id,
|
||||
ac.content,
|
||||
ac.removed,
|
||||
um.read,
|
||||
ac.published,
|
||||
ac.updated,
|
||||
ac.deleted,
|
||||
ac.community_id,
|
||||
ac.community_actor_id,
|
||||
ac.community_local,
|
||||
ac.community_name,
|
||||
ac.banned,
|
||||
ac.banned_from_community,
|
||||
ac.creator_name,
|
||||
ac.creator_avatar,
|
||||
ac.score,
|
||||
ac.upvotes,
|
||||
ac.downvotes,
|
||||
ac.hot_rank,
|
||||
u.id as user_id,
|
||||
coalesce(cl.score, 0) as my_vote,
|
||||
(select cs.id::bool from comment_saved cs where u.id = cs.user_id and cs.comment_id = ac.id) as saved,
|
||||
um.recipient_id,
|
||||
(select actor_id from user_ u where u.id = um.recipient_id) as recipient_actor_id,
|
||||
(select local from user_ u where u.id = um.recipient_id) as recipient_local
|
||||
from user_ u
|
||||
cross join all_comment ac
|
||||
left join comment_like cl on u.id = cl.user_id and ac.id = cl.comment_id
|
||||
left join user_mention um on um.comment_id = ac.id
|
||||
|
||||
union all
|
||||
|
||||
select
|
||||
ac.id,
|
||||
um.id as user_mention_id,
|
||||
ac.creator_id,
|
||||
ac.creator_actor_id,
|
||||
ac.creator_local,
|
||||
ac.post_id,
|
||||
ac.parent_id,
|
||||
ac.content,
|
||||
ac.removed,
|
||||
um.read,
|
||||
ac.published,
|
||||
ac.updated,
|
||||
ac.deleted,
|
||||
ac.community_id,
|
||||
ac.community_actor_id,
|
||||
ac.community_local,
|
||||
ac.community_name,
|
||||
ac.banned,
|
||||
ac.banned_from_community,
|
||||
ac.creator_name,
|
||||
ac.creator_avatar,
|
||||
ac.score,
|
||||
ac.upvotes,
|
||||
ac.downvotes,
|
||||
ac.hot_rank,
|
||||
null as user_id,
|
||||
null as my_vote,
|
||||
null as saved,
|
||||
um.recipient_id,
|
||||
(select actor_id from user_ u where u.id = um.recipient_id) as recipient_actor_id,
|
||||
(select local from user_ u where u.id = um.recipient_id) as recipient_local
|
||||
from all_comment ac
|
||||
left join user_mention um on um.comment_id = ac.id
|
||||
;
|
||||
|
@ -0,0 +1,939 @@
|
||||
-- Drop the mviews
|
||||
drop view post_mview;
|
||||
drop materialized view user_mview;
|
||||
drop view community_mview;
|
||||
drop materialized view private_message_mview;
|
||||
drop view user_mention_mview;
|
||||
drop view reply_view;
|
||||
drop view comment_mview;
|
||||
drop materialized view post_aggregates_mview;
|
||||
drop materialized view community_aggregates_mview;
|
||||
drop materialized view comment_aggregates_mview;
|
||||
drop trigger refresh_private_message on private_message;
|
||||
|
||||
-- User
|
||||
drop view user_view;
|
||||
create view user_view as
|
||||
select
|
||||
u.id,
|
||||
u.actor_id,
|
||||
u.name,
|
||||
u.avatar,
|
||||
u.email,
|
||||
u.matrix_user_id,
|
||||
u.bio,
|
||||
u.local,
|
||||
u.admin,
|
||||
u.banned,
|
||||
u.show_avatars,
|
||||
u.send_notifications_to_email,
|
||||
u.published,
|
||||
coalesce(pd.posts, 0) as number_of_posts,
|
||||
coalesce(pd.score, 0) as post_score,
|
||||
coalesce(cd.comments, 0) as number_of_comments,
|
||||
coalesce(cd.score, 0) as comment_score
|
||||
from user_ u
|
||||
left join (
|
||||
select
|
||||
p.creator_id as creator_id,
|
||||
count(distinct p.id) as posts,
|
||||
sum(pl.score) as score
|
||||
from post p
|
||||
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
|
||||
join comment_like cl on c.id = cl.comment_id
|
||||
group by c.creator_id
|
||||
) cd on u.id = cd.creator_id;
|
||||
|
||||
|
||||
create table user_fast as select * from user_view;
|
||||
alter table user_fast add primary key (id);
|
||||
|
||||
drop trigger refresh_user on user_;
|
||||
|
||||
create trigger refresh_user
|
||||
after insert or update or delete
|
||||
on user_
|
||||
for each row
|
||||
execute procedure refresh_user();
|
||||
|
||||
-- Sample insert
|
||||
-- insert into user_(name, password_encrypted) values ('test_name', 'bleh');
|
||||
-- Sample delete
|
||||
-- delete from user_ where name like 'test_name';
|
||||
-- Sample update
|
||||
-- update user_ set avatar = 'hai' where name like 'test_name';
|
||||
create or replace function refresh_user()
|
||||
returns trigger language plpgsql
|
||||
as $$
|
||||
begin
|
||||
IF (TG_OP = 'DELETE') THEN
|
||||
delete from user_fast where id = OLD.id;
|
||||
ELSIF (TG_OP = 'UPDATE') THEN
|
||||
delete from user_fast where id = OLD.id;
|
||||
insert into user_fast select * from user_view where id = NEW.id;
|
||||
|
||||
-- Refresh post_fast, cause of user info changes
|
||||
delete from post_aggregates_fast where creator_id = NEW.id;
|
||||
insert into post_aggregates_fast select * from post_aggregates_view where creator_id = NEW.id;
|
||||
|
||||
delete from comment_aggregates_fast where creator_id = NEW.id;
|
||||
insert into comment_aggregates_fast select * from comment_aggregates_view where creator_id = NEW.id;
|
||||
|
||||
ELSIF (TG_OP = 'INSERT') THEN
|
||||
insert into user_fast select * from user_view where id = NEW.id;
|
||||
END IF;
|
||||
|
||||
return null;
|
||||
end $$;
|
||||
|
||||
-- Post
|
||||
-- Redoing the views : Credit eiknat
|
||||
drop view post_view;
|
||||
drop view post_aggregates_view;
|
||||
|
||||
create view post_aggregates_view as
|
||||
select
|
||||
p.*,
|
||||
-- creator details
|
||||
u.actor_id as creator_actor_id,
|
||||
u."local" as creator_local,
|
||||
u."name" as creator_name,
|
||||
u.avatar as creator_avatar,
|
||||
u.banned as banned,
|
||||
cb.id::bool as banned_from_community,
|
||||
-- community details
|
||||
c.actor_id as community_actor_id,
|
||||
c."local" as community_local,
|
||||
c."name" as community_name,
|
||||
c.removed as community_removed,
|
||||
c.deleted as community_deleted,
|
||||
c.nsfw as community_nsfw,
|
||||
-- post score data/comment count
|
||||
coalesce(ct.comments, 0) as number_of_comments,
|
||||
coalesce(pl.score, 0) as score,
|
||||
coalesce(pl.upvotes, 0) as upvotes,
|
||||
coalesce(pl.downvotes, 0) as downvotes,
|
||||
hot_rank(
|
||||
coalesce(pl.score , 0), (
|
||||
case
|
||||
when (p.published < ('now'::timestamp - '1 month'::interval))
|
||||
then p.published
|
||||
else greatest(ct.recent_comment_time, p.published)
|
||||
end
|
||||
)
|
||||
) as hot_rank,
|
||||
(
|
||||
case
|
||||
when (p.published < ('now'::timestamp - '1 month'::interval))
|
||||
then p.published
|
||||
else greatest(ct.recent_comment_time, p.published)
|
||||
end
|
||||
) as newest_activity_time
|
||||
from post p
|
||||
left join user_ u on p.creator_id = u.id
|
||||
left join community_user_ban cb on p.creator_id = cb.user_id and p.community_id = cb.community_id
|
||||
left join community c on p.community_id = c.id
|
||||
left join (
|
||||
select
|
||||
post_id,
|
||||
count(*) as comments,
|
||||
max(published) as recent_comment_time
|
||||
from comment
|
||||
group by post_id
|
||||
) ct on ct.post_id = p.id
|
||||
left join (
|
||||
select
|
||||
post_id,
|
||||
sum(score) as score,
|
||||
sum(score) filter (where score = 1) as upvotes,
|
||||
-sum(score) filter (where score = -1) as downvotes
|
||||
from post_like
|
||||
group by post_id
|
||||
) pl on pl.post_id = p.id
|
||||
order by p.id;
|
||||
|
||||
create view post_view as
|
||||
select
|
||||
pav.*,
|
||||
us.id as user_id,
|
||||
us.user_vote as my_vote,
|
||||
us.is_subbed::bool as subscribed,
|
||||
us.is_read::bool as read,
|
||||
us.is_saved::bool as saved
|
||||
from post_aggregates_view pav
|
||||
cross join lateral (
|
||||
select
|
||||
u.id,
|
||||
coalesce(cf.community_id, 0) as is_subbed,
|
||||
coalesce(pr.post_id, 0) as is_read,
|
||||
coalesce(ps.post_id, 0) as is_saved,
|
||||
coalesce(pl.score, 0) as user_vote
|
||||
from user_ u
|
||||
left join community_user_ban cb on u.id = cb.user_id and cb.community_id = pav.community_id
|
||||
left join community_follower cf on u.id = cf.user_id and cf.community_id = pav.community_id
|
||||
left join post_read pr on u.id = pr.user_id and pr.post_id = pav.id
|
||||
left join post_saved ps on u.id = ps.user_id and ps.post_id = pav.id
|
||||
left join post_like pl on u.id = pl.user_id and pav.id = pl.post_id
|
||||
) as us
|
||||
|
||||
union all
|
||||
|
||||
select
|
||||
pav.*,
|
||||
null as user_id,
|
||||
null as my_vote,
|
||||
null as subscribed,
|
||||
null as read,
|
||||
null as saved
|
||||
from post_aggregates_view pav;
|
||||
|
||||
-- The post fast table
|
||||
create table post_aggregates_fast as select * from post_aggregates_view;
|
||||
alter table post_aggregates_fast add primary key (id);
|
||||
|
||||
-- For the hot rank resorting
|
||||
create index idx_post_aggregates_fast_hot_rank_published on post_aggregates_fast (hot_rank desc, published desc);
|
||||
|
||||
create view post_fast_view as
|
||||
select
|
||||
pav.*,
|
||||
us.id as user_id,
|
||||
us.user_vote as my_vote,
|
||||
us.is_subbed::bool as subscribed,
|
||||
us.is_read::bool as read,
|
||||
us.is_saved::bool as saved
|
||||
from post_aggregates_fast pav
|
||||
cross join lateral (
|
||||
select
|
||||
u.id,
|
||||
coalesce(cf.community_id, 0) as is_subbed,
|
||||
coalesce(pr.post_id, 0) as is_read,
|
||||
coalesce(ps.post_id, 0) as is_saved,
|
||||
coalesce(pl.score, 0) as user_vote
|
||||
from user_ u
|
||||
left join community_user_ban cb on u.id = cb.user_id and cb.community_id = pav.community_id
|
||||
left join community_follower cf on u.id = cf.user_id and cf.community_id = pav.community_id
|
||||
left join post_read pr on u.id = pr.user_id and pr.post_id = pav.id
|
||||
left join post_saved ps on u.id = ps.user_id and ps.post_id = pav.id
|
||||
left join post_like pl on u.id = pl.user_id and pav.id = pl.post_id
|
||||
) as us
|
||||
|
||||
union all
|
||||
|
||||
select
|
||||
pav.*,
|
||||
null as user_id,
|
||||
null as my_vote,
|
||||
null as subscribed,
|
||||
null as read,
|
||||
null as saved
|
||||
from post_aggregates_fast pav;
|
||||
|
||||
drop trigger refresh_post on post;
|
||||
|
||||
create trigger refresh_post
|
||||
after insert or update or delete
|
||||
on post
|
||||
for each row
|
||||
execute procedure refresh_post();
|
||||
|
||||
-- Sample select
|
||||
-- select id, name from post_fast_view where name like 'test_post' and user_id is null;
|
||||
-- Sample insert
|
||||
-- insert into post(name, creator_id, community_id) values ('test_post', 2, 2);
|
||||
-- Sample delete
|
||||
-- delete from post where name like 'test_post';
|
||||
-- Sample update
|
||||
-- update post set community_id = 4 where name like 'test_post';
|
||||
create or replace function refresh_post()
|
||||
returns trigger language plpgsql
|
||||
as $$
|
||||
begin
|
||||
IF (TG_OP = 'DELETE') THEN
|
||||
delete from post_aggregates_fast where id = OLD.id;
|
||||
|
||||
-- Update community number of posts
|
||||
update community_aggregates_fast set number_of_posts = number_of_posts - 1 where id = OLD.community_id;
|
||||
ELSIF (TG_OP = 'UPDATE') THEN
|
||||
delete from post_aggregates_fast where id = OLD.id;
|
||||
insert into post_aggregates_fast select * from post_aggregates_view where id = NEW.id;
|
||||
ELSIF (TG_OP = 'INSERT') THEN
|
||||
insert into post_aggregates_fast select * from post_aggregates_view where id = NEW.id;
|
||||
|
||||
-- Update that users number of posts, post score
|
||||
delete from user_fast where id = NEW.creator_id;
|
||||
insert into user_fast select * from user_view where id = NEW.creator_id;
|
||||
|
||||
-- Update community number of posts
|
||||
update community_aggregates_fast set number_of_posts = number_of_posts + 1 where id = NEW.community_id;
|
||||
|
||||
-- Update the hot rank on the post table
|
||||
-- TODO this might not correctly update it, using a 1 week interval
|
||||
update post_aggregates_fast as paf
|
||||
set hot_rank = pav.hot_rank
|
||||
from post_aggregates_view as pav
|
||||
where paf.id = pav.id and (pav.published > ('now'::timestamp - '1 week'::interval));
|
||||
END IF;
|
||||
|
||||
return null;
|
||||
end $$;
|
||||
|
||||
-- Community
|
||||
-- Redoing the views : Credit eiknat
|
||||
drop view community_moderator_view;
|
||||
drop view community_follower_view;
|
||||
drop view community_user_ban_view;
|
||||
drop view community_view;
|
||||
drop view community_aggregates_view;
|
||||
|
||||
create view community_aggregates_view as
|
||||
select
|
||||
c.id,
|
||||
c.name,
|
||||
c.title,
|
||||
c.description,
|
||||
c.category_id,
|
||||
c.creator_id,
|
||||
c.removed,
|
||||
c.published,
|
||||
c.updated,
|
||||
c.deleted,
|
||||
c.nsfw,
|
||||
c.actor_id,
|
||||
c.local,
|
||||
c.last_refreshed_at,
|
||||
u.actor_id as creator_actor_id,
|
||||
u.local as creator_local,
|
||||
u.name as creator_name,
|
||||
u.avatar as creator_avatar,
|
||||
cat.name as category_name,
|
||||
coalesce(cf.subs, 0) as number_of_subscribers,
|
||||
coalesce(cd.posts, 0) as number_of_posts,
|
||||
coalesce(cd.comments, 0) as number_of_comments,
|
||||
hot_rank(cf.subs, c.published) as hot_rank
|
||||
from community c
|
||||
left join user_ u on c.creator_id = u.id
|
||||
left join category cat on c.category_id = cat.id
|
||||
left join (
|
||||
select
|
||||
p.community_id,
|
||||
count(distinct p.id) as posts,
|
||||
count(distinct ct.id) as comments
|
||||
from post p
|
||||
join comment ct on p.id = ct.post_id
|
||||
group by p.community_id
|
||||
) cd on cd.community_id = c.id
|
||||
left join (
|
||||
select
|
||||
community_id,
|
||||
count(*) as subs
|
||||
from community_follower
|
||||
group by community_id
|
||||
) cf on cf.community_id = c.id;
|
||||
|
||||
create view community_view as
|
||||
select
|
||||
cv.*,
|
||||
us.user as user_id,
|
||||
us.is_subbed::bool as subscribed
|
||||
from community_aggregates_view cv
|
||||
cross join lateral (
|
||||
select
|
||||
u.id as user,
|
||||
coalesce(cf.community_id, 0) as is_subbed
|
||||
from user_ u
|
||||
left join community_follower cf on u.id = cf.user_id and cf.community_id = cv.id
|
||||
) as us
|
||||
|
||||
union all
|
||||
|
||||
select
|
||||
cv.*,
|
||||
null as user_id,
|
||||
null as subscribed
|
||||
from community_aggregates_view cv;
|
||||
|
||||
create view community_moderator_view as
|
||||
select
|
||||
cm.*,
|
||||
u.actor_id as user_actor_id,
|
||||
u.local as user_local,
|
||||
u.name as user_name,
|
||||
u.avatar as avatar,
|
||||
c.actor_id as community_actor_id,
|
||||
c.local as community_local,
|
||||
c.name as community_name
|
||||
from community_moderator cm
|
||||
left join user_ u on cm.user_id = u.id
|
||||
left join community c on cm.community_id = c.id;
|
||||
|
||||
create view community_follower_view as
|
||||
select
|
||||
cf.*,
|
||||
u.actor_id as user_actor_id,
|
||||
u.local as user_local,
|
||||
u.name as user_name,
|
||||
u.avatar as avatar,
|
||||
c.actor_id as community_actor_id,
|
||||
c.local as community_local,
|
||||
c.name as community_name
|
||||
from community_follower cf
|
||||
left join user_ u on cf.user_id = u.id
|
||||
left join community c on cf.community_id = c.id;
|
||||
|
||||
create view community_user_ban_view as
|
||||
select
|
||||
cb.*,
|
||||
u.actor_id as user_actor_id,
|
||||
u.local as user_local,
|
||||
u.name as user_name,
|
||||
u.avatar as avatar,
|
||||
c.actor_id as community_actor_id,
|
||||
c.local as community_local,
|
||||
c.name as community_name
|
||||
from community_user_ban cb
|
||||
left join user_ u on cb.user_id = u.id
|
||||
left join community c on cb.community_id = c.id;
|
||||
|
||||
-- The community fast table
|
||||
|
||||
create table community_aggregates_fast as select * from community_aggregates_view;
|
||||
alter table community_aggregates_fast add primary key (id);
|
||||
|
||||
create view community_fast_view as
|
||||
select
|
||||
ac.*,
|
||||
u.id as user_id,
|
||||
(select cf.id::boolean from community_follower cf where u.id = cf.user_id and ac.id = cf.community_id) as subscribed
|
||||
from user_ u
|
||||
cross join (
|
||||
select
|
||||
ca.*
|
||||
from community_aggregates_fast ca
|
||||
) ac
|
||||
|
||||
union all
|
||||
|
||||
select
|
||||
caf.*,
|
||||
null as user_id,
|
||||
null as subscribed
|
||||
from community_aggregates_fast caf;
|
||||
|
||||
drop trigger refresh_community on community;
|
||||
|
||||
create trigger refresh_community
|
||||
after insert or update or delete
|
||||
on community
|
||||
for each row
|
||||
execute procedure refresh_community();
|
||||
|
||||
-- Sample select
|
||||
-- select * from community_fast_view where name like 'test_community_name' and user_id is null;
|
||||
-- Sample insert
|
||||
-- insert into community(name, title, category_id, creator_id) values ('test_community_name', 'test_community_title', 1, 2);
|
||||
-- Sample delete
|
||||
-- delete from community where name like 'test_community_name';
|
||||
-- Sample update
|
||||
-- update community set title = 'test_community_title_2' where name like 'test_community_name';
|
||||
create or replace function refresh_community()
|
||||
returns trigger language plpgsql
|
||||
as $$
|
||||
begin
|
||||
IF (TG_OP = 'DELETE') THEN
|
||||
delete from community_aggregates_fast where id = OLD.id;
|
||||
ELSIF (TG_OP = 'UPDATE') THEN
|
||||
delete from community_aggregates_fast where id = OLD.id;
|
||||
insert into community_aggregates_fast select * from community_aggregates_view where id = NEW.id;
|
||||
|
||||
-- Update user view due to owner changes
|
||||
delete from user_fast where id = NEW.creator_id;
|
||||
insert into user_fast select * from user_view where id = NEW.creator_id;
|
||||
|
||||
-- Update post view due to community changes
|
||||
delete from post_aggregates_fast where community_id = NEW.id;
|
||||
insert into post_aggregates_fast select * from post_aggregates_view where community_id = NEW.id;
|
||||
|
||||
-- TODO make sure this shows up in the users page ?
|
||||
ELSIF (TG_OP = 'INSERT') THEN
|
||||
insert into community_aggregates_fast select * from community_aggregates_view where id = NEW.id;
|
||||
END IF;
|
||||
|
||||
return null;
|
||||
end $$;
|
||||
|
||||
-- Comment
|
||||
|
||||
drop view user_mention_view;
|
||||
drop view comment_view;
|
||||
drop view comment_aggregates_view;
|
||||
|
||||
create view comment_aggregates_view as
|
||||
select
|
||||
ct.*,
|
||||
-- community details
|
||||
p.community_id,
|
||||
c.actor_id as community_actor_id,
|
||||
c."local" as community_local,
|
||||
c."name" as community_name,
|
||||
-- creator details
|
||||
u.banned as banned,
|
||||
coalesce(cb.id, 0)::bool as banned_from_community,
|
||||
u.actor_id as creator_actor_id,
|
||||
u.local as creator_local,
|
||||
u.name as creator_name,
|
||||
u.avatar as creator_avatar,
|
||||
-- score details
|
||||
coalesce(cl.total, 0) as score,
|
||||
coalesce(cl.up, 0) as upvotes,
|
||||
coalesce(cl.down, 0) as downvotes,
|
||||
hot_rank(coalesce(cl.total, 0), ct.published) as hot_rank
|
||||
from comment ct
|
||||
left join post p on ct.post_id = p.id
|
||||
left join community c on p.community_id = c.id
|
||||
left join user_ u on ct.creator_id = u.id
|
||||
left join community_user_ban cb on ct.creator_id = cb.user_id and p.id = ct.post_id and p.community_id = cb.community_id
|
||||
left join (
|
||||
select
|
||||
l.comment_id as id,
|
||||
sum(l.score) as total,
|
||||
count(case when l.score = 1 then 1 else null end) as up,
|
||||
count(case when l.score = -1 then 1 else null end) as down
|
||||
from comment_like l
|
||||
group by comment_id
|
||||
) as cl on cl.id = ct.id;
|
||||
|
||||
create or replace view comment_view as (
|
||||
select
|
||||
cav.*,
|
||||
us.user_id as user_id,
|
||||
us.my_vote as my_vote,
|
||||
us.is_subbed::bool as subscribed,
|
||||
us.is_saved::bool as saved
|
||||
from comment_aggregates_view cav
|
||||
cross join lateral (
|
||||
select
|
||||
u.id as user_id,
|
||||
coalesce(cl.score, 0) as my_vote,
|
||||
coalesce(cf.id, 0) as is_subbed,
|
||||
coalesce(cs.id, 0) as is_saved
|
||||
from user_ u
|
||||
left join comment_like cl on u.id = cl.user_id and cav.id = cl.comment_id
|
||||
left join comment_saved cs on u.id = cs.user_id and cs.comment_id = cav.id
|
||||
left join community_follower cf on u.id = cf.user_id and cav.community_id = cf.community_id
|
||||
) as us
|
||||
|
||||
union all
|
||||
|
||||
select
|
||||
cav.*,
|
||||
null as user_id,
|
||||
null as my_vote,
|
||||
null as subscribed,
|
||||
null as saved
|
||||
from comment_aggregates_view cav
|
||||
);
|
||||
|
||||
-- The fast view
|
||||
create table comment_aggregates_fast as select * from comment_aggregates_view;
|
||||
alter table comment_aggregates_fast add primary key (id);
|
||||
|
||||
create view comment_fast_view as
|
||||
select
|
||||
cav.*,
|
||||
us.user_id as user_id,
|
||||
us.my_vote as my_vote,
|
||||
us.is_subbed::bool as subscribed,
|
||||
us.is_saved::bool as saved
|
||||
from comment_aggregates_fast cav
|
||||
cross join lateral (
|
||||
select
|
||||
u.id as user_id,
|
||||
coalesce(cl.score, 0) as my_vote,
|
||||
coalesce(cf.id, 0) as is_subbed,
|
||||
coalesce(cs.id, 0) as is_saved
|
||||
from user_ u
|
||||
left join comment_like cl on u.id = cl.user_id and cav.id = cl.comment_id
|
||||
left join comment_saved cs on u.id = cs.user_id and cs.comment_id = cav.id
|
||||
left join community_follower cf on u.id = cf.user_id and cav.community_id = cf.community_id
|
||||
) as us
|
||||
|
||||
union all
|
||||
|
||||
select
|
||||
cav.*,
|
||||
null as user_id,
|
||||
null as my_vote,
|
||||
null as subscribed,
|
||||
null as saved
|
||||
from comment_aggregates_fast cav;
|
||||
|
||||
-- Do the reply_view referencing the comment_fast_view
|
||||
create view reply_fast_view as
|
||||
with closereply as (
|
||||
select
|
||||
c2.id,
|
||||
c2.creator_id as sender_id,
|
||||
c.creator_id as recipient_id
|
||||
from comment c
|
||||
inner join comment c2 on c.id = c2.parent_id
|
||||
where c2.creator_id != c.creator_id
|
||||
-- Do union where post is null
|
||||
union
|
||||
select
|
||||
c.id,
|
||||
c.creator_id as sender_id,
|
||||
p.creator_id as recipient_id
|
||||
from comment c, post p
|
||||
where c.post_id = p.id and c.parent_id is null and c.creator_id != p.creator_id
|
||||
)
|
||||
select cv.*,
|
||||
closereply.recipient_id
|
||||
from comment_fast_view cv, closereply
|
||||
where closereply.id = cv.id
|
||||
;
|
||||
|
||||
-- user mention
|
||||
create view user_mention_view as
|
||||
select
|
||||
c.id,
|
||||
um.id as user_mention_id,
|
||||
c.creator_id,
|
||||
c.creator_actor_id,
|
||||
c.creator_local,
|
||||
c.post_id,
|
||||
c.parent_id,
|
||||
c.content,
|
||||
c.removed,
|
||||
um.read,
|
||||
c.published,
|
||||
c.updated,
|
||||
c.deleted,
|
||||
c.community_id,
|
||||
c.community_actor_id,
|
||||
c.community_local,
|
||||
c.community_name,
|
||||
c.banned,
|
||||
c.banned_from_community,
|
||||
c.creator_name,
|
||||
c.creator_avatar,
|
||||
c.score,
|
||||
c.upvotes,
|
||||
c.downvotes,
|
||||
c.hot_rank,
|
||||
c.user_id,
|
||||
c.my_vote,
|
||||
c.saved,
|
||||
um.recipient_id,
|
||||
(select actor_id from user_ u where u.id = um.recipient_id) as recipient_actor_id,
|
||||
(select local from user_ u where u.id = um.recipient_id) as recipient_local
|
||||
from user_mention um, comment_view c
|
||||
where um.comment_id = c.id;
|
||||
|
||||
create view user_mention_fast_view as
|
||||
select
|
||||
ac.id,
|
||||
um.id as user_mention_id,
|
||||
ac.creator_id,
|
||||
ac.creator_actor_id,
|
||||
ac.creator_local,
|
||||
ac.post_id,
|
||||
ac.parent_id,
|
||||
ac.content,
|
||||
ac.removed,
|
||||
um.read,
|
||||
ac.published,
|
||||
ac.updated,
|
||||
ac.deleted,
|
||||
ac.community_id,
|
||||
ac.community_actor_id,
|
||||
ac.community_local,
|
||||
ac.community_name,
|
||||
ac.banned,
|
||||
ac.banned_from_community,
|
||||
ac.creator_name,
|
||||
ac.creator_avatar,
|
||||
ac.score,
|
||||
ac.upvotes,
|
||||
ac.downvotes,
|
||||
ac.hot_rank,
|
||||
u.id as user_id,
|
||||
coalesce(cl.score, 0) as my_vote,
|
||||
(select cs.id::bool from comment_saved cs where u.id = cs.user_id and cs.comment_id = ac.id) as saved,
|
||||
um.recipient_id,
|
||||
(select actor_id from user_ u where u.id = um.recipient_id) as recipient_actor_id,
|
||||
(select local from user_ u where u.id = um.recipient_id) as recipient_local
|
||||
from user_ u
|
||||
cross join (
|
||||
select
|
||||
ca.*
|
||||
from comment_aggregates_fast ca
|
||||
) ac
|
||||
left join comment_like cl on u.id = cl.user_id and ac.id = cl.comment_id
|
||||
left join user_mention um on um.comment_id = ac.id
|
||||
|
||||
union all
|
||||
|
||||
select
|
||||
ac.id,
|
||||
um.id as user_mention_id,
|
||||
ac.creator_id,
|
||||
ac.creator_actor_id,
|
||||
ac.creator_local,
|
||||
ac.post_id,
|
||||
ac.parent_id,
|
||||
ac.content,
|
||||
ac.removed,
|
||||
um.read,
|
||||
ac.published,
|
||||
ac.updated,
|
||||
ac.deleted,
|
||||
ac.community_id,
|
||||
ac.community_actor_id,
|
||||
ac.community_local,
|
||||
ac.community_name,
|
||||
ac.banned,
|
||||
ac.banned_from_community,
|
||||
ac.creator_name,
|
||||
ac.creator_avatar,
|
||||
ac.score,
|
||||
ac.upvotes,
|
||||
ac.downvotes,
|
||||
ac.hot_rank,
|
||||
null as user_id,
|
||||
null as my_vote,
|
||||
null as saved,
|
||||
um.recipient_id,
|
||||
(select actor_id from user_ u where u.id = um.recipient_id) as recipient_actor_id,
|
||||
(select local from user_ u where u.id = um.recipient_id) as recipient_local
|
||||
from comment_aggregates_fast ac
|
||||
left join user_mention um on um.comment_id = ac.id
|
||||
;
|
||||
|
||||
|
||||
drop trigger refresh_comment on comment;
|
||||
|
||||
create trigger refresh_comment
|
||||
after insert or update or delete
|
||||
on comment
|
||||
for each row
|
||||
execute procedure refresh_comment();
|
||||
|
||||
-- Sample select
|
||||
-- select * from comment_fast_view where content = 'test_comment' and user_id is null;
|
||||
-- Sample insert
|
||||
-- insert into comment(creator_id, post_id, content) values (2, 2, 'test_comment');
|
||||
-- Sample delete
|
||||
-- delete from comment where content like 'test_comment';
|
||||
-- Sample update
|
||||
-- update comment set removed = true where content like 'test_comment';
|
||||
create or replace function refresh_comment()
|
||||
returns trigger language plpgsql
|
||||
as $$
|
||||
begin
|
||||
IF (TG_OP = 'DELETE') THEN
|
||||
delete from comment_aggregates_fast where id = OLD.id;
|
||||
|
||||
-- Update community number of comments
|
||||
update community_aggregates_fast as caf
|
||||
set number_of_comments = number_of_comments - 1
|
||||
from post as p
|
||||
where caf.id = p.community_id and p.id = OLD.post_id;
|
||||
|
||||
ELSIF (TG_OP = 'UPDATE') THEN
|
||||
delete from comment_aggregates_fast where id = OLD.id;
|
||||
insert into comment_aggregates_fast select * from comment_aggregates_view where id = NEW.id;
|
||||
ELSIF (TG_OP = 'INSERT') THEN
|
||||
insert into comment_aggregates_fast select * from comment_aggregates_view where id = NEW.id;
|
||||
|
||||
-- Update user view due to comment count
|
||||
update user_fast
|
||||
set number_of_comments = number_of_comments + 1
|
||||
where id = NEW.creator_id;
|
||||
|
||||
-- Update post view due to comment count, new comment activity time, but only on new posts
|
||||
-- TODO this could be done more efficiently
|
||||
delete from post_aggregates_fast where id = NEW.post_id;
|
||||
insert into post_aggregates_fast select * from post_aggregates_view where id = NEW.post_id;
|
||||
|
||||
-- Force the hot rank as zero on week-older posts
|
||||
update post_aggregates_fast as paf
|
||||
set hot_rank = 0
|
||||
where paf.id = NEW.post_id and (paf.published < ('now'::timestamp - '1 week'::interval));
|
||||
|
||||
-- Update community number of comments
|
||||
update community_aggregates_fast as caf
|
||||
set number_of_comments = number_of_comments + 1
|
||||
from post as p
|
||||
where caf.id = p.community_id and p.id = NEW.post_id;
|
||||
|
||||
END IF;
|
||||
|
||||
return null;
|
||||
end $$;
|
||||
|
||||
|
||||
-- post_like
|
||||
-- select id, score, my_vote from post_fast_view where id = 29 and user_id = 4;
|
||||
-- Sample insert
|
||||
-- insert into post_like(user_id, post_id, score) values (4, 29, 1);
|
||||
-- Sample delete
|
||||
-- delete from post_like where user_id = 4 and post_id = 29;
|
||||
-- Sample update
|
||||
-- update post_like set score = -1 where user_id = 4 and post_id = 29;
|
||||
|
||||
-- TODO test this a LOT
|
||||
create or replace function refresh_post_like()
|
||||
returns trigger language plpgsql
|
||||
as $$
|
||||
begin
|
||||
IF (TG_OP = 'DELETE') THEN
|
||||
update post_aggregates_fast
|
||||
set score = case
|
||||
when (OLD.score = 1) then score - 1
|
||||
else score + 1 end,
|
||||
upvotes = case
|
||||
when (OLD.score = 1) then upvotes - 1
|
||||
else upvotes end,
|
||||
downvotes = case
|
||||
when (OLD.score = -1) then downvotes - 1
|
||||
else downvotes end
|
||||
where id = OLD.post_id;
|
||||
|
||||
ELSIF (TG_OP = 'INSERT') THEN
|
||||
update post_aggregates_fast
|
||||
set score = case
|
||||
when (NEW.score = 1) then score + 1
|
||||
else score - 1 end,
|
||||
upvotes = case
|
||||
when (NEW.score = 1) then upvotes + 1
|
||||
else upvotes end,
|
||||
downvotes = case
|
||||
when (NEW.score = -1) then downvotes + 1
|
||||
else downvotes end
|
||||
where id = NEW.post_id;
|
||||
END IF;
|
||||
|
||||
return null;
|
||||
end $$;
|
||||
|
||||
drop trigger refresh_post_like on post_like;
|
||||
create trigger refresh_post_like
|
||||
after insert or delete
|
||||
on post_like
|
||||
for each row
|
||||
execute procedure refresh_post_like();
|
||||
|
||||
-- comment_like
|
||||
-- select id, score, my_vote from comment_fast_view where id = 29 and user_id = 4;
|
||||
-- Sample insert
|
||||
-- insert into comment_like(user_id, comment_id, post_id, score) values (4, 29, 51, 1);
|
||||
-- Sample delete
|
||||
-- delete from comment_like where user_id = 4 and comment_id = 29;
|
||||
-- Sample update
|
||||
-- update comment_like set score = -1 where user_id = 4 and comment_id = 29;
|
||||
create or replace function refresh_comment_like()
|
||||
returns trigger language plpgsql
|
||||
as $$
|
||||
begin
|
||||
-- TODO possibly select from comment_fast to get previous scores, instead of re-fetching the views?
|
||||
IF (TG_OP = 'DELETE') THEN
|
||||
update comment_aggregates_fast
|
||||
set score = case
|
||||
when (OLD.score = 1) then score - 1
|
||||
else score + 1 end,
|
||||
upvotes = case
|
||||
when (OLD.score = 1) then upvotes - 1
|
||||
else upvotes end,
|
||||
downvotes = case
|
||||
when (OLD.score = -1) then downvotes - 1
|
||||
else downvotes end
|
||||
where id = OLD.comment_id;
|
||||
|
||||
ELSIF (TG_OP = 'INSERT') THEN
|
||||
update comment_aggregates_fast
|
||||
set score = case
|
||||
when (NEW.score = 1) then score + 1
|
||||
else score - 1 end,
|
||||
upvotes = case
|
||||
when (NEW.score = 1) then upvotes + 1
|
||||
else upvotes end,
|
||||
downvotes = case
|
||||
when (NEW.score = -1) then downvotes + 1
|
||||
else downvotes end
|
||||
where id = NEW.comment_id;
|
||||
END IF;
|
||||
|
||||
return null;
|
||||
end $$;
|
||||
|
||||
drop trigger refresh_comment_like on comment_like;
|
||||
create trigger refresh_comment_like
|
||||
after insert or delete
|
||||
on comment_like
|
||||
for each row
|
||||
execute procedure refresh_comment_like();
|
||||
|
||||
-- Community user ban
|
||||
|
||||
drop trigger refresh_community_user_ban on community_user_ban;
|
||||
create trigger refresh_community_user_ban
|
||||
after insert or delete -- Note this is missing after update
|
||||
on community_user_ban
|
||||
for each row
|
||||
execute procedure refresh_community_user_ban();
|
||||
|
||||
-- select creator_name, banned_from_community from comment_fast_view where user_id = 4 and content = 'test_before_ban';
|
||||
-- select creator_name, banned_from_community, community_id from comment_aggregates_fast where content = 'test_before_ban';
|
||||
-- Sample insert
|
||||
-- insert into comment(creator_id, post_id, content) values (1198, 341, 'test_before_ban');
|
||||
-- insert into community_user_ban(community_id, user_id) values (2, 1198);
|
||||
-- Sample delete
|
||||
-- delete from community_user_ban where user_id = 1198 and community_id = 2;
|
||||
-- delete from comment where content = 'test_before_ban';
|
||||
-- update comment_aggregates_fast set banned_from_community = false where creator_id = 1198 and community_id = 2;
|
||||
create or replace function refresh_community_user_ban()
|
||||
returns trigger language plpgsql
|
||||
as $$
|
||||
begin
|
||||
-- TODO possibly select from comment_fast to get previous scores, instead of re-fetching the views?
|
||||
IF (TG_OP = 'DELETE') THEN
|
||||
update comment_aggregates_fast set banned_from_community = false where creator_id = OLD.user_id and community_id = OLD.community_id;
|
||||
update post_aggregates_fast set banned_from_community = false where creator_id = OLD.user_id and community_id = OLD.community_id;
|
||||
ELSIF (TG_OP = 'INSERT') THEN
|
||||
update comment_aggregates_fast set banned_from_community = true where creator_id = NEW.user_id and community_id = NEW.community_id;
|
||||
update post_aggregates_fast set banned_from_community = true where creator_id = NEW.user_id and community_id = NEW.community_id;
|
||||
END IF;
|
||||
|
||||
return null;
|
||||
end $$;
|
||||
|
||||
-- Community follower
|
||||
|
||||
drop trigger refresh_community_follower on community_follower;
|
||||
create trigger refresh_community_follower
|
||||
after insert or delete -- Note this is missing after update
|
||||
on community_follower
|
||||
for each row
|
||||
execute procedure refresh_community_follower();
|
||||
|
||||
create or replace function refresh_community_follower()
|
||||
returns trigger language plpgsql
|
||||
as $$
|
||||
begin
|
||||
IF (TG_OP = 'DELETE') THEN
|
||||
update community_aggregates_fast set number_of_subscribers = number_of_subscribers - 1 where id = OLD.community_id;
|
||||
ELSIF (TG_OP = 'INSERT') THEN
|
||||
update community_aggregates_fast set number_of_subscribers = number_of_subscribers + 1 where id = NEW.community_id;
|
||||
END IF;
|
||||
|
||||
return null;
|
||||
end $$;
|
Loading…
Reference in New Issue