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be1389420b
* SQL format checking, 1. * SQL format checking, 2. * SQL format checking, 3. * SQL format checking, 4. * SQL format checking, 5. * Running pg_format * Getting rid of comment. * Upping pg_format version. * Using git ls-files for sql format check. * Fixing sql lints. * Addressing PR comments.
61 lines
2 KiB
PL/PgSQL
61 lines
2 KiB
PL/PgSQL
-- First rename current newest comment time to newest_comment_time_necro
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-- necro means that time is limited to 2 days, whereas newest_comment_time ignores that.
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ALTER TABLE post_aggregates RENAME COLUMN newest_comment_time TO newest_comment_time_necro;
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-- Add the newest_comment_time column
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ALTER TABLE post_aggregates
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ADD COLUMN newest_comment_time timestamp NOT NULL DEFAULT now();
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-- Set the current newest_comment_time based on the old ones
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UPDATE
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post_aggregates
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SET
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newest_comment_time = newest_comment_time_necro;
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-- Add the indexes for this new column
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CREATE INDEX idx_post_aggregates_newest_comment_time ON post_aggregates (newest_comment_time DESC);
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CREATE INDEX idx_post_aggregates_stickied_newest_comment_time ON post_aggregates (stickied DESC, newest_comment_time DESC);
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-- Forgot to add index w/ stickied first for most comments:
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CREATE INDEX idx_post_aggregates_stickied_comments ON post_aggregates (stickied DESC, comments DESC);
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-- Alter the comment trigger to set the newest_comment_time, and newest_comment_time_necro
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CREATE OR REPLACE FUNCTION post_aggregates_comment_count ()
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RETURNS TRIGGER
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LANGUAGE plpgsql
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AS $$
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BEGIN
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IF (TG_OP = 'INSERT') THEN
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UPDATE
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post_aggregates pa
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SET
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comments = comments + 1,
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newest_comment_time = NEW.published
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WHERE
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pa.post_id = NEW.post_id;
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-- A 2 day necro-bump limit
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UPDATE
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post_aggregates pa
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SET
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newest_comment_time_necro = NEW.published
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WHERE
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pa.post_id = NEW.post_id
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AND published > ('now'::timestamp - '2 days'::interval);
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ELSIF (TG_OP = 'DELETE') THEN
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-- Join to post because that post may not exist anymore
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UPDATE
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post_aggregates pa
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SET
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comments = comments - 1
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FROM
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post p
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WHERE
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pa.post_id = p.id
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AND pa.post_id = OLD.post_id;
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END IF;
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RETURN NULL;
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END
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$$;
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