lemmy/migrations/2020-01-21-001001_create_private_message/down.sql

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-- Drop the triggers
DROP TRIGGER refresh_private_message ON private_message;
DROP FUNCTION refresh_private_message ();
-- Drop the view and table
DROP VIEW private_message_view CASCADE;
DROP TABLE private_message;
-- Rebuild the old views
DROP VIEW user_view CASCADE;
CREATE VIEW user_view AS
SELECT
u.id,
u.name,
u.avatar,
u.email,
u.fedi_name,
u.admin,
u.banned,
u.show_avatars,
u.send_notifications_to_email,
u.published,
(
SELECT
count(*)
FROM
post p
WHERE
p.creator_id = u.id) AS number_of_posts,
(
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,
(
SELECT
count(*)
FROM
comment c
WHERE
c.creator_id = u.id) AS number_of_comments,
(
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
FROM
user_ u;
CREATE MATERIALIZED VIEW user_mview AS
SELECT
*
FROM
user_view;
CREATE UNIQUE INDEX idx_user_mview_id ON user_mview (id);
-- Drop the columns
ALTER TABLE user_
DROP COLUMN matrix_user_id;