PHP MYSQL query result "RANKING"
- by fkessler
Hi,
I need to get a list of users Ranking by points and from my command line (MySQL) is was able to generate the necessary code:
SET @rank=0;
SELECT rank, iduser, pontos FROM (
SELECT @rank:=@rank+1 AS rank,
SUM(points.points) AS pontos,
points.iduser,
users.name,
users.idade
FROM points
INNER JOIN
users
ON (points.iduser = users.id)
WHERE (users.idade >= %s) AND (users.idade <= %s)
GROUP BY points.iduser ORDER BY pontos DESC) AS totals WHERE iduser = %s
The problem is that I need this to run on AMFPHP and I´ve tested it in a test PHP file and seems that I can´t use the SET and SELECT in the same "mysql_query".
I´ve looked and some used to mysql_query to do this (I´ve tested it and it works), but can I trust this to be effective and error free? Does it work like in MySQL transactions or setting the @rank in a seperated query may cause unexpected results?
