Hãy thử điều này:
SELECT
(
CASE
WHEN a.winner = a.f_a THEN "Win"
WHEN a.winner = a.f_b THEN "Loss"
WHEN a.winner IS NULL THEN a.method
END
) AS result,
SUM(a.f_a IN (d.fighter_a, d.fighter_b) AND d.winner <=> a.f_a) AS fighter_wincount,
SUM(a.f_a IN (d.fighter_a, d.fighter_b) AND d.winner IS NOT NULL AND d.winner <> a.f_a) AS fighter_losscount,
SUM(a.f_a IN (d.fighter_a, d.fighter_b) AND d.method = 'Draw') AS fighter_drawcount,
SUM(a.f_a IN (d.fighter_a, d.fighter_b) AND d.method = 'No Contest') AS fighter_nocontestcount,
b.name AS opponent,
SUM(a.f_b IN (d.fighter_a, d.fighter_b) AND d.winner <=> a.f_b) AS opponent_wincount,
SUM(a.f_b IN (d.fighter_a, d.fighter_b) AND d.winner IS NOT NULL AND d.winner <> a.f_b) AS opponent_losscount,
SUM(a.f_b IN (d.fighter_a, d.fighter_b) AND d.method = 'Draw') AS opponent_drawcount,
SUM(a.f_b IN (d.fighter_a, d.fighter_b) AND d.method = 'No Contest') AS opponent_nocontestcount,
b.fighter_id AS opponent_id,
b.fighting_out_of_country AS opponent_country,
a.method AS method,
a.method_type AS method_type,
a.round AS round,
a.time AS time,
c.event_id AS event_id,
c.event_name AS event,
c.event_date AS date,
c.event_city AS event_city,
c.event_state AS event_state,
c.event_country AS event_country
FROM
(
SELECT
fight_id,
IF(fighter_b = :fighter_id, fighter_b, fighter_a) AS f_a,
IF(fighter_b = :fighter_id, fighter_a, fighter_b) AS f_b,
winner,
method,
method_type,
round,
time,
event
FROM
fights
WHERE
:fighter_id IN (fighter_a, fighter_b)
) a
INNER JOIN
fighters b ON a.f_b = b.fighter_id
INNER JOIN
events c ON a.event = c.event_id
LEFT JOIN
(
SELECT
a.fighter_a,
a.fighter_b,
a.winner,
a.method,
b.event_date
FROM
fights a
INNER JOIN
events b ON a.event = b.event_id
) d ON
(a.f_a IN (d.fighter_a, d.fighter_b) OR a.f_b IN (d.fighter_a, d.fighter_b)) AND
d.event_date < c.event_date
GROUP BY
a.fight_id
ORDER BY
c.event_date DESC
