MySQL get single column value of last record - mysql

Question

I have a query which looks like:
SELECT max(sp.id) as max_id, p.name as player, max(update_time) as last_seen, min(login_time) as first_seen, s.name as last_server,
sum(sp.play_time) as ontime_total,
sum(case when login_time > NOW() - INTERVAL 1 DAY then sp.play_time end) as ontime_day,
sum(case when login_time > NOW() - INTERVAL 7 DAY then sp.play_time end) as ontime_week,
sum(case when login_time > NOW() - INTERVAL 1 MONTH then sp.play_time end) as ontime_month
FROM session_player sp
INNER JOIN players p ON p.id=sp.player_id
INNER JOIN server s ON s.id=sp.server_id
WHERE p.name = ?
The result:
The issue:
Node22 isn't the last server. I am struggling on finding a way to get the server of the last record within this query. How would you solve this issue, if possible without running a second query.
(This query already takes 2-3s seconds depending on the user, if possible I would like to avoid any overhead and in case you see performance optimization possibilities I would appreciate anything.)
This would work, but its performance you can guess (4-5s):
SELECT
MAX( sp.id ) AS max_id, p.name AS player, MAX( update_time ) AS last_seen, MIN( login_time ) AS first_seen,
SUM( sp.play_time ) AS ontime_total,
SUM( CASE WHEN login_time > NOW( ) - INTERVAL 1 DAY THEN sp.play_time END ) AS ontime_day,
SUM( CASE WHEN login_time > NOW( ) - INTERVAL 7 DAY THEN sp.play_time END ) AS ontime_week,
SUM( CASE WHEN login_time > NOW( ) - INTERVAL 1 MONTH THEN sp.play_time END ) AS ontime_month,
(SELECT s.name
FROM session_player sp
JOIN players p ON p.id=sp.player_id
JOIN server s ON s.id=sp.server_id
WHERE p.name = ?
ORDER BY sp.id DESC
LIMIT 1
) as last_server
FROM session_player sp
INNER JOIN players p ON p.id = sp.player_id
INNER JOIN server s ON s.id = sp.server_id
WHERE p.name = ?

Answer 1

After nearly 3 hours of experimenting I got it and even 260 times faster as before:
SELECT MAX(pd.id) AS max_id, pd.name AS player, MAX( pd.update_time ) AS last_seen, MIN( pd.login_time ) AS first_seen,
SUM( pd.play_time ) AS ontime_total,
SUM( CASE WHEN pd.login_time > NOW( ) - INTERVAL 1 DAY THEN pd.play_time END ) AS ontime_day,
SUM( CASE WHEN pd.login_time > NOW( ) - INTERVAL 7 DAY THEN pd.play_time END ) AS ontime_week,
SUM( CASE WHEN pd.login_time > NOW( ) - INTERVAL 1 MONTH THEN pd.play_time END ) AS ontime_month,
(SELECT s.name
FROM session_player sp
INNER JOIN server s ON s.id=sp.server_id
WHERE max(pd.id)=sp.id
) as last_server
FROM (
SELECT sp.id AS id, sp.server_id as server_id, p.name AS name, sp.login_time AS login_time, sp.update_time AS update_time, sp.play_time AS play_time
FROM session_player sp
INNER JOIN players p ON p.id=sp.player_id
WHERE p.name = ?
) as pd

Answer 2

Try this:
SELECT sp.id as max_id, p.name as player, max(update_time) as last_seen,
min(login_time) as first_seen, s.name as last_server,
sum(sp.play_time) as ontime_total,
sum(case when login_time > NOW() - INTERVAL 1 DAY then sp.play_time end) as ontime_day,
sum(case when login_time > NOW() - INTERVAL 7 DAY then sp.play_time end) as ontime_week,
sum(case when login_time > NOW() - INTERVAL 1 MONTH then sp.play_time end) as ontime_month
FROM session_player sp
INNER JOIN players p ON p.id=sp.player_id
INNER JOIN server s ON s.id=sp.server_id
WHERE p.name = ?
group by sp.player_id
order by sp.id desc limit 1