lemmy/migrations/2020-02-06-165953_change_post_title_length/down.sql

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-- Drop the dependent views
DROP VIEW post_view;
DROP VIEW post_mview;
DROP MATERIALIZED VIEW post_aggregates_mview;
DROP VIEW post_aggregates_view;
DROP VIEW mod_remove_post_view;
DROP VIEW mod_sticky_post_view;
DROP VIEW mod_lock_post_view;
DROP VIEW mod_remove_comment_view;
ALTER TABLE post
ALTER COLUMN name TYPE varchar(100);
-- regen post view
CREATE VIEW post_aggregates_view AS
SELECT
p.*,
(
SELECT
u.banned
FROM
user_ u
WHERE
p.creator_id = u.id) AS banned,
(
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,
(
SELECT
name
FROM
user_
WHERE
p.creator_id = user_.id) AS creator_name,
(
SELECT
avatar
FROM
user_
WHERE
p.creator_id = user_.id) AS creator_avatar,
(
SELECT
name
FROM
community
WHERE
p.community_id = community.id) AS community_name,
(
SELECT
removed
FROM
community c
WHERE
p.community_id = c.id) AS community_removed,
(
SELECT
deleted
FROM
community c
WHERE
p.community_id = c.id) AS community_deleted,
(
SELECT
nsfw
FROM
community c
WHERE
p.community_id = c.id) AS community_nsfw,
(
SELECT
count(*)
FROM
comment
WHERE
comment.post_id = p.id) AS number_of_comments,
coalesce(sum(pl.score), 0) AS score,
count(
CASE WHEN pl.score = 1 THEN
1
ELSE
NULL
END) AS upvotes,
count(
CASE WHEN pl.score = - 1 THEN
1
ELSE
NULL
END) AS downvotes,
hot_rank (coalesce(sum(pl.score), 0), p.published) AS hot_rank
FROM
post p
LEFT JOIN post_like pl ON p.id = pl.post_id
GROUP BY
p.id;
CREATE MATERIALIZED VIEW post_aggregates_mview AS
SELECT
*
FROM
post_aggregates_view;
CREATE UNIQUE INDEX idx_post_aggregates_mview_id ON post_aggregates_mview (id);
CREATE VIEW post_view AS
with all_post AS (
SELECT
pa.*
FROM
post_aggregates_view pa
)
SELECT
ap.*,
u.id AS user_id,
coalesce(pl.score, 0) AS my_vote,
(
SELECT
cf.id::bool
FROM
community_follower cf
WHERE
u.id = cf.user_id
AND cf.community_id = ap.community_id) AS subscribed,
(
SELECT
pr.id::bool
FROM
post_read pr
WHERE
u.id = pr.user_id
AND pr.post_id = ap.id) AS read,
(
SELECT
ps.id::bool
FROM
post_saved ps
WHERE
u.id = ps.user_id
AND ps.post_id = ap.id) AS saved
FROM
user_ u
CROSS JOIN all_post ap
LEFT JOIN post_like pl ON u.id = pl.user_id
AND ap.id = pl.post_id
UNION ALL
SELECT
ap.*,
NULL AS user_id,
NULL AS my_vote,
NULL AS subscribed,
NULL AS read,
NULL AS saved
FROM
all_post ap;
CREATE VIEW post_mview AS
with all_post AS (
SELECT
pa.*
FROM
post_aggregates_mview pa
)
SELECT
ap.*,
u.id AS user_id,
coalesce(pl.score, 0) AS my_vote,
(
SELECT
cf.id::bool
FROM
community_follower cf
WHERE
u.id = cf.user_id
AND cf.community_id = ap.community_id) AS subscribed,
(
SELECT
pr.id::bool
FROM
post_read pr
WHERE
u.id = pr.user_id
AND pr.post_id = ap.id) AS read,
(
SELECT
ps.id::bool
FROM
post_saved ps
WHERE
u.id = ps.user_id
AND ps.post_id = ap.id) AS saved
FROM
user_ u
CROSS JOIN all_post ap
LEFT JOIN post_like pl ON u.id = pl.user_id
AND ap.id = pl.post_id
UNION ALL
SELECT
ap.*,
NULL AS user_id,
NULL AS my_vote,
NULL AS subscribed,
NULL AS read,
NULL AS saved
FROM
all_post ap;
-- The mod views
CREATE VIEW mod_remove_post_view AS
SELECT
mrp.*,
(
SELECT
name
FROM
user_ u
WHERE
mrp.mod_user_id = u.id) AS mod_user_name,
(
SELECT
name
FROM
post p
WHERE
mrp.post_id = p.id) AS post_name,
(
SELECT
c.id
FROM
post p,
community c
WHERE
mrp.post_id = p.id
AND p.community_id = c.id) AS community_id,
(
SELECT
c.name
FROM
post p,
community c
WHERE
mrp.post_id = p.id
AND p.community_id = c.id) AS community_name
FROM
mod_remove_post mrp;
CREATE VIEW mod_lock_post_view AS
SELECT
mlp.*,
(
SELECT
name
FROM
user_ u
WHERE
mlp.mod_user_id = u.id) AS mod_user_name,
(
SELECT
name
FROM
post p
WHERE
mlp.post_id = p.id) AS post_name,
(
SELECT
c.id
FROM
post p,
community c
WHERE
mlp.post_id = p.id
AND p.community_id = c.id) AS community_id,
(
SELECT
c.name
FROM
post p,
community c
WHERE
mlp.post_id = p.id
AND p.community_id = c.id) AS community_name
FROM
mod_lock_post mlp;
CREATE VIEW mod_remove_comment_view AS
SELECT
mrc.*,
(
SELECT
name
FROM
user_ u
WHERE
mrc.mod_user_id = u.id) AS mod_user_name,
(
SELECT
c.id
FROM
comment c
WHERE
mrc.comment_id = c.id) AS comment_user_id,
(
SELECT
name
FROM
user_ u,
comment c
WHERE
mrc.comment_id = c.id
AND u.id = c.creator_id) AS comment_user_name,
(
SELECT
content
FROM
comment c
WHERE
mrc.comment_id = c.id) AS comment_content,
(
SELECT
p.id
FROM
post p,
comment c
WHERE
mrc.comment_id = c.id
AND c.post_id = p.id) AS post_id,
(
SELECT
p.name
FROM
post p,
comment c
WHERE
mrc.comment_id = c.id
AND c.post_id = p.id) AS post_name,
(
SELECT
co.id
FROM
comment c,
post p,
community co
WHERE
mrc.comment_id = c.id
AND c.post_id = p.id
AND p.community_id = co.id) AS community_id,
(
SELECT
co.name
FROM
comment c,
post p,
community co
WHERE
mrc.comment_id = c.id
AND c.post_id = p.id
AND p.community_id = co.id) AS community_name
FROM
mod_remove_comment mrc;
CREATE VIEW mod_sticky_post_view AS
SELECT
msp.*,
(
SELECT
name
FROM
user_ u
WHERE
msp.mod_user_id = u.id) AS mod_user_name,
(
SELECT
name
FROM
post p
WHERE
msp.post_id = p.id) AS post_name,
(
SELECT
c.id
FROM
post p,
community c
WHERE
msp.post_id = p.id
AND p.community_id = c.id) AS community_id,
(
SELECT
c.name
FROM
post p,
community c
WHERE
msp.post_id = p.id
AND p.community_id = c.id) AS community_name
FROM
mod_sticky_post msp;