Get index of certain result in query results list? - mysql

Question

I've been trying to even write this title in a way that makes most sense, but through much googling I have not found anything to match what I am looking.
Basically, I have a database that stores players and their different levels, and I already have a working query that fetches a list of all players and ranks them in the required order (Total prestige first, then level, then experience and lastly by the oldest update timestamp)
The query I use for this is:
SELECT u.id, u.username, u.mode, u.total_prestige as prestige, u.total_level as level, u.total_xp as exp, s.created FROM hs_users u JOIN hs_userskill s ON u.id = s.userId
WHERE s.id IN (SELECT MAX(id) FROM hs_userskill WHERE userId = u.id GROUP BY userId)
ORDER BY total_prestige DESC, total_level DESC, total_xp DESC, created ASC;
But now, on a different page, I need to find the players "rank" (so basically their index in the results list)
Is there a proper sql way of doing this (probably), instead of just taking the whole results set into code and looping over it? As I am tempted at doing at this point in time.
My database structure in sql:
CREATE TABLE IF NOT EXISTS `hs_modes` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`modename` varchar(40) CHARACTER SET utf8 COLLATE utf8_unicode_ci NOT NULL,
`modeicon` varchar(40) CHARACTER SET utf8 COLLATE utf8_unicode_ci NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin;
CREATE TABLE IF NOT EXISTS `hs_skills` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`skillname` varchar(40) CHARACTER SET utf8 COLLATE utf8_unicode_ci NOT NULL,
`skillicon` varchar(40) CHARACTER SET utf8 COLLATE utf8_unicode_ci NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin;
CREATE TABLE IF NOT EXISTS `hs_users` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`username` varchar(40) CHARACTER SET utf8 COLLATE utf8_unicode_ci NOT NULL UNIQUE,
`mode` int(11) NOT NULL DEFAULT '0',
`total_prestige` int(11) NOT NULL DEFAULT '0',
`total_level` int(11) NOT NULL DEFAULT '0',
`total_xp` bigint(20) NOT NULL DEFAULT '0',
PRIMARY KEY (`id`),
FOREIGN KEY (`mode`) REFERENCES `hs_modes`(`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin;
CREATE TABLE IF NOT EXISTS `hs_userskill` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`userId` int(11) NOT NULL,
`skillId` int(11) NOT NULL,
`prestige` int(11) NOT NULL,
`experience` int(11) NOT NULL,
`created` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
PRIMARY KEY (`id`),
FOREIGN KEY (`userId`) REFERENCES `hs_users`(`id`),
FOREIGN KEY (`skillId`) REFERENCES `hs_skills`(`id`),
UNIQUE KEY `userskill` (`userId`, `skillId`, `prestige`, `experience`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin;

Answer 1

In mysql 8 you have ROW_NUMBER to signify the position in the specified order
SELECT
u.id,
u.username,
u.mode,
u.total_prestige AS prestige,
u.total_level AS level,
u.total_xp AS exp,
s.created
,ROW_NUMBER() OVER(ORDER BY total_prestige DESC , total_level DESC , total_xp DESC , created ASC) rn
FROM
hs_users u
JOIN
hs_userskill s ON u.id = s.userId
WHERE
s.id IN (SELECT
MAX(id)
FROM
hs_userskill
WHERE
userId = u.id
GROUP BY userId)
ORDER BY total_prestige DESC , total_level DESC , total_xp DESC , created ASC;
Fro Bob rank
SELECT
*
FROM
(SELECT
u.id,
u.username,
u.mode,
u.total_prestige AS prestige,
u.total_level AS level,
u.total_xp AS exp,
s.created
,ROW_NUMBER() OVER(ORDER BY total_prestige DESC , total_level DESC , total_xp DESC , created ASC) rn
FROM
hs_users u
JOIN
hs_userskill s ON u.id = s.userId
WHERE
s.id IN (SELECT
MAX(id)
FROM
hs_userskill
WHERE
userId = u.id
GROUP BY userId)
) t1
WHERE username = 'Bob'

Answer 2

Set the database connection cursor to fetch the result as dictionary, then you can access the data as dictionary index of it's column names