lemmy/migrations/2019-09-09-042010_add_stickied_posts/up.sql

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-- Add the column
ALTER TABLE post
ADD COLUMN stickied boolean DEFAULT FALSE NOT NULL;
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-- Add the mod table
CREATE TABLE mod_sticky_post (
id serial PRIMARY KEY,
mod_user_id int REFERENCES user_ ON UPDATE CASCADE ON DELETE CASCADE NOT NULL,
post_id int REFERENCES post ON UPDATE CASCADE ON DELETE CASCADE NOT NULL,
stickied boolean DEFAULT TRUE,
when_ timestamp NOT NULL DEFAULT now()
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);
-- Add mod view
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;
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-- Recreate the view
DROP VIEW post_view;
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CREATE VIEW post_view AS
with all_post 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
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
)
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;
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