lemmy/migrations/2020-04-07-135912_add_user_.../down.sql

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-- User table
DROP VIEW user_view CASCADE;
ALTER TABLE user_
ADD COLUMN fedi_name varchar(40) NOT NULL DEFAULT 'http://fake.com';
ALTER TABLE user_
ADD CONSTRAINT user__name_fedi_name_key UNIQUE (name, fedi_name);
-- Community
ALTER TABLE community
ADD CONSTRAINT community_name_key UNIQUE (name);
CREATE VIEW user_view AS
SELECT
u.id,
u.name,
u.avatar,
u.email,
u.matrix_user_id,
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);