MySQL doesn't have the windowing functions that some other databases
provide, but you can probably achieve the same effect with a couple
user-defined variables:
select
teams_id as my_teams_id
,sum(rating) as total_team_rating
from
(select
players.teams_id
,players.players_id
,players_master.rating
,if(@team <> players.teams_id, @row := 1, @row := @row + 1) as rank,
@team := players.team_id
from players
join players_master on players.players_id = players_master.players_id
where players.worlds_id = 1
and players.red_cards = 0
and players.injury_duration_remaining = 0
order by players.teams_id, players_master.rating desc) s1
where rank <= 11
group by teams_id;
-Travis
-----Original Message-----
From: Tompkins Neil [mailto:neil.tompk...@googlemail.com]
Sent: Thursday, September 09, 2010 1:58 AM
To: [MySQL]
Subject: Fwd: Query SUM help
Any help would be really appreciated ?
---------- Forwarded message ----------
From: Tompkins Neil <neil.tompk...@googlemail.com>
Date: Wed, Sep 8, 2010 at 5:30 PM
Subject: Query SUM help
To: "[MySQL]" <mysql@lists.mysql.com>
Hi
I've the following query :
SELECT total_team_rating, my_teams_id
FROM
(SELECT players.teams_id AS my_teams_id, SUM(players_master.rating) AS
total_team_rating
FROM players
INNER JOIN players_master ON players.players_id = players_master.players_id
WHERE players.worlds_id = 1 AND players.red_cards = 0 AND
players.injury_duration_remaining = 0
GROUP BY players.teams_id) s1
ORDER BY s1.total_team_rating DESC
This gives me the total of players_master.rating for each players.teams_id.
However, I'm wanting to only base the players_master.rating on the top 11
records in the players table for each team. How can I modify my query to
achieve this ?
Thanks
Neil
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