Exceeded slow_query limit (141.4 > 60.0) in mysql: ```

[vorpal-buildbot]

    CREATE TABLE IF NOT EXISTS _new_card_person_stats (
        name VARCHAR(190) NOT NULL,
        season_id INT NOT NULL,
        person_id INT NOT NULL,
        wins INT NOT NULL,
        losses INT NOT NULL,
        draws INT NOT NULL,
        perfect_runs INT NOT NULL,
        tournament_wins INT NOT NULL,
        tournament_top8s INT NOT NULL,
        deck_type ENUM('league', 'tournament', 'other') NOT NULL,
        PRIMARY KEY (season_id, person_id, name, deck_type),
        FOREIGN KEY (season_id) REFERENCES season (id) ON UPDATE CASCADE ON DELETE CASCADE,
        FOREIGN KEY (person_id) REFERENCES person (id)  ON UPDATE CASCADE ON DELETE CASCADE,
        INDEX idx_person_id_name (person_id, name)
    ) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci AS
    SELECT
        card AS name,
        season.season_id,
        d.person_id,
        SUM(CASE WHEN d.id IS NOT NULL THEN 1 ELSE 0 END) AS num_decks,
        IFNULL(SUM(dsum.wins), 0) AS wins,
        IFNULL(SUM(dsum.losses), 0) AS losses,
        IFNULL(SUM(dsum.draws), 0) AS draws,
        SUM(CASE WHEN dsum.wins >= 5 AND dsum.losses = 0 AND d.source_id IN (SELECT id FROM source WHERE name = 'League') THEN 1 ELSE 0 END) AS perfect_runs,
        SUM(CASE WHEN dsum.finish = 1 THEN 1 ELSE 0 END) AS tournament_wins,
        SUM(CASE WHEN dsum.finish <= 8 THEN 1 ELSE 0 END) AS tournament_top8s,
        (CASE WHEN ct.name = 'League' THEN 'league' WHEN ct.name = 'Gatherling' THEN 'tournament' ELSE 'other' END) AS deck_type
    FROM
        deck AS d
    INNER JOIN
        -- Eliminate maindeck/sideboard double-counting with DISTINCT. See #5493.
        (SELECT DISTINCT card, deck_id FROM deck_card) AS dc ON d.id = dc.deck_id
    
    LEFT JOIN
        competition AS c ON d.competition_id = c.id
    LEFT JOIN
        competition_series AS cs ON cs.id = c.competition_series_id
    LEFT JOIN
        competition_type AS ct ON ct.id = cs.competition_type_id

    LEFT JOIN deck_cache AS season ON d.id = season.deck_id
    
    LEFT JOIN
        (
            SELECT
                d.id,
                d.created_date,
                d.finish,
                SUM(CASE WHEN dm.games > IFNULL(odm.games, 0) THEN 1 ELSE 0 END) AS wins, -- IFNULL so we still count byes as wins.
                SUM(CASE WHEN dm.games < odm.games THEN 1 ELSE 0 END) AS losses,
                SUM(CASE WHEN dm.games = odm.games THEN 1 ELSE 0 END) AS draws
            FROM
                deck_match AS dm
            INNER JOIN
                deck_match AS odm ON dm.match_id = odm.match_id AND dm.deck_id <> odm.deck_id
            INNER JOIN
                deck AS d ON d.id = dm.deck_id
            GROUP BY
                d.id
        ) AS dsum ON d.id = dsum.id

    GROUP BY
        card,
        d.person_id,
        season.season_id,
        ct.name
    ORDER BY
        NULL -- Tell the database that we don't need the results back in the GROUP BY order, any order will do.
```

[] (slow_query, 141.4, mysql)

Reported on decksite by mysql-perf

Location Hash: df12254c84a4085181707ae883f9da8fbb472586