mirror of https://github.com/LemmyNet/lemmy.git
302 lines
6.9 KiB
SQL
302 lines
6.9 KiB
SQL
ALTER TABLE community
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ADD COLUMN deleted boolean DEFAULT FALSE NOT NULL;
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ALTER TABLE post
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ADD COLUMN deleted boolean DEFAULT FALSE NOT NULL;
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ALTER TABLE comment
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ADD COLUMN deleted boolean DEFAULT FALSE NOT NULL;
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-- The views
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DROP VIEW community_view;
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CREATE VIEW community_view AS
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with all_community AS (
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SELECT
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*,
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(
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SELECT
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name
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FROM
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user_ u
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WHERE
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c.creator_id = u.id) AS creator_name,
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(
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SELECT
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name
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FROM
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category ct
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WHERE
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c.category_id = ct.id) AS category_name,
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(
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SELECT
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count(*)
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FROM
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community_follower cf
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WHERE
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cf.community_id = c.id) AS number_of_subscribers,
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(
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SELECT
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count(*)
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FROM
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post p
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WHERE
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p.community_id = c.id) AS number_of_posts,
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(
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SELECT
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count(*)
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FROM
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comment co,
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post p
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WHERE
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c.id = p.community_id
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AND p.id = co.post_id) AS number_of_comments
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FROM
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community c
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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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(
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SELECT
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cf.id::boolean
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FROM
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community_follower cf
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WHERE
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u.id = cf.user_id
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AND ac.id = cf.community_id) AS subscribed
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FROM
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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
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all_community ac;
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DROP VIEW post_view;
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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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p.*,
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(
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SELECT
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name
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FROM
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user_
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WHERE
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p.creator_id = user_.id) AS creator_name,
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(
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SELECT
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name
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FROM
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community
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WHERE
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p.community_id = community.id) AS community_name,
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(
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SELECT
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removed
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FROM
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community c
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WHERE
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p.community_id = c.id) AS community_removed,
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(
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SELECT
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deleted
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FROM
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community c
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WHERE
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p.community_id = c.id) AS community_deleted,
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(
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SELECT
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count(*)
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FROM
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comment
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WHERE
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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(
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CASE WHEN pl.score = 1 THEN
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1
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ELSE
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NULL
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END) AS upvotes,
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count(
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CASE WHEN pl.score = - 1 THEN
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1
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ELSE
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NULL
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END) AS downvotes,
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hot_rank (coalesce(sum(pl.score), 0), p.published) AS hot_rank
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FROM
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post p
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LEFT JOIN post_like pl ON p.id = pl.post_id
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GROUP BY
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p.id
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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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(
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SELECT
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cf.id::bool
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FROM
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community_follower cf
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WHERE
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u.id = cf.user_id
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AND cf.community_id = ap.community_id) AS subscribed,
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(
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SELECT
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pr.id::bool
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FROM
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post_read pr
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WHERE
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u.id = pr.user_id
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AND pr.post_id = ap.id) AS read,
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(
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SELECT
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ps.id::bool
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FROM
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post_saved ps
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WHERE
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u.id = ps.user_id
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AND ps.post_id = ap.id) AS saved
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FROM
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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
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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
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all_post ap;
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DROP VIEW reply_view;
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DROP VIEW comment_view;
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CREATE VIEW comment_view AS
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with all_comment AS (
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SELECT
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c.*,
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(
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SELECT
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community_id
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FROM
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post p
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WHERE
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p.id = c.post_id),
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(
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SELECT
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u.banned
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FROM
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user_ u
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WHERE
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c.creator_id = u.id) AS banned,
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(
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SELECT
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cb.id::bool
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FROM
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community_user_ban cb,
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post p
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WHERE
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c.creator_id = cb.user_id
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AND p.id = c.post_id
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AND p.community_id = cb.community_id) AS banned_from_community,
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(
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SELECT
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name
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FROM
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user_
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WHERE
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c.creator_id = user_.id) AS creator_name,
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coalesce(sum(cl.score), 0) AS score,
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count(
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CASE WHEN cl.score = 1 THEN
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1
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ELSE
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NULL
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END) AS upvotes,
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count(
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CASE WHEN cl.score = - 1 THEN
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1
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ELSE
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NULL
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END) AS downvotes
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FROM
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comment c
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LEFT JOIN comment_like cl ON c.id = cl.comment_id
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GROUP BY
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c.id
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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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(
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SELECT
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cs.id::bool
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FROM
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comment_saved cs
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WHERE
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u.id = cs.user_id
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AND cs.comment_id = ac.id) AS saved
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FROM
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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
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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 saved
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FROM
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all_comment ac;
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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
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comment c
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INNER JOIN comment c2 ON c.id = c2.parent_id
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WHERE
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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
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comment c,
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post p
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WHERE
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c.post_id = p.id
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AND c.parent_id IS NULL
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AND c.creator_id != p.creator_id
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)
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SELECT
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cv.*,
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closereply.recipient_id
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FROM
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comment_view cv,
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closereply
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WHERE
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closereply.id = cv.id;
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