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Update replaceable_schema.sql

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dullbananas 2023-12-23 14:15:26 -07:00 committed by GitHub
parent 1cd6ed14ae
commit 94b745fd69
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1 changed files with 38 additions and 26 deletions
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64
replaceable_schema.sql
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@ -220,7 +220,7 @@ CREATE TRIGGER aggregates
-- These triggers update aggregates in response to votes.
CREATE PROCEDURE aggregates_from_like (target_name text)
CREATE PROCEDURE aggregates_from_like (target_name text, creator_id_getter text)
LANGUAGE plpgsql
AS $a$
BEGIN
@ -231,7 +231,7 @@ BEGIN
AS $$
BEGIN
WITH
any_like (target_id, score, added) AS (
individual_vote (target_id, score, vote_amount_change) AS (
SELECT
%1$s_id,
score,
@ -246,42 +246,54 @@ BEGIN
FROM
new_like
),
added_to_target (target_id, added_upvotes, added_downvotes) AS (
vote_group (target_id, added_upvotes, added_downvotes) AS (
SELECT
target_id,
sum(added) FILTER (WHERE score = 1),
sum(added) FILTER (WHERE score = -1)
individual_vote.target_id,
sum(vote_amount_change) FILTER (WHERE score = 1),
sum(vote_amount_change) FILTER (WHERE score <> 1)
FROM
any_like
individual_vote
GROUP BY
target_id
)
UPDATE
%1$s_aggregates AS aggregates
SET
score = score + added_upvotes - added_downvotes,
upvotes = upvotes + added_upvotes,
downvotes = downvotes + added_downvotes,
controversy_rank = controversy_rank (
(upvotes + added_upvotes)::numeric,
(downvotes + added_downvotes)::numeric
)
FROM
added_to_target
WHERE
aggregates.comment_id = added_to_comment.comment_id;
individual_vote.target_id
),
-- Update aggregates for target
target_aggregates_update_result (creator_id, creator_score_change) AS (
UPDATE
%1$s_aggregates AS aggregates
SET
score = score + added_upvotes - added_downvotes,
upvotes = upvotes + added_upvotes,
downvotes = downvotes + added_downvotes,
controversy_rank = controversy_rank (
(upvotes + added_upvotes)::numeric,
(downvotes + added_downvotes)::numeric
)
FROM
vote_group
WHERE
aggregates.comment_id = vote_group.target_id
RETURNING
%2$s,
added_upvotes - added_downvotes;
RETURN NULL;
END
$$;
CREATE TRIGGER aggregates
AFTER INSERT OR DELETE OR UPDATE OF score ON %1$s_like
REFERENCING OLD TABLE AS old_like NEW TABLE AS new_like
FOR EACH STATEMENT
EXECUTE FUNCTION %1$s_aggregates_from_like;
$b$,
target_name);
target_name,
creator_id_getter);
END
$a$;
CALL aggregates_from_like ('comment');
CALL aggregates_from_like ('comment', '(SELECT creator_id FROM comment WHERE id = vote_group.target_id)');
CALL aggregates_from_like ('post');
CALL aggregates_from_like ('post', 'creator_id');
COMMIT;