sum multiple columns of same table in mysql

Question

I am working on developing sports site.

In this site I've two tables one is tbl_team which stores the team details and another table is tbl_tournamentmatches which stores the details of different rounds of tournament matches.

In my tbl_tournamentmatches I'm storing team1_id , team2_id , team1_score and team2_score .

My Table having entry like this:

tbl_tournamentmatches

match_id team1_id team2_id team1_score team2_score
5        4        9        15          5
6        9        16       15          5
7        4        16       5          15
8        4        16       5          15

tbl_team

team_id team_title
4       KKR
9       RR
16      CSK

I want Result Should look like this:-

Team name Score
CSK        35
KKR        25
RR         20

I'd used this query :-

select * from 
(
   SELECT sum(team1_points) as totalpoints,t.team_title 
   from tbl_team t 
   left join tbl_tournamentmatches m 
   on t.team_id = m.team1_id 
   where tournament_id = 3 AND agegroup_id = 36 
   group by team1_id 
   union 
   SELECT sum(team2_points) as totalpoints,t.team_title 
   from tbl_team t 
   left join tbl_tournamentmatches m 
   on t.team_id = m.team2_id 
   where tournament_id = 3 AND agegroup_id = 36 
   group by team2_id
) s

But i got result like this :-

KKR   25
RR    15
RR     5
CSK   35

Any Help will be appreciated. Thanks in advance.

Answer 1

Do the joins to get the team and points for each match, and then do the sum on the results of that:-

SELECT team_title, sum(team_points) as totalpoints 
FROM 
(
   SELECT team1_id AS team_id, team1_points AS team_points, t.team_title 
   FROM tbl_team t 
   LEFT JOIN tbl_tournamentmatches m 
   ON t.team_id = m.team1_id 
   WHERE tournament_id = 3 AND agegroup_id = 36 
   UNION ALL
   SELECT team2_id AS team_id, team2_points AS team_points, t.team_title 
   FROM tbl_team t 
   LEFT JOIN tbl_tournamentmatches m 
   ON t.team_id = m.team2_id 
   WHERE tournament_id = 3 AND agegroup_id = 36 
) s
GROUP BY team_id, team_title

Answer 2

try this query

SELECT t.team_name
    ,SUM(CASE
        WHEN t.team_id = tn.team1_id THEN tn.team1_score
        WHEN t.team_id = tn.team2_id THEN tn.team2_score
    END) AS score
FROM team t
LEFT JOIN tournament tn ON t.team_id = tn.team1_id OR t.team_id = team2_id
GROUP BY t.team_name

Answer 3

Use Union all to make all team and score as different rows.
Then use an Inner Join .

Query

select t2.team_title as TeamName, 
sum(team_score) as Score 
from 
( 
    select match_id,team1_id as team_id, team1_score as team_score 
    from tblMatch 
    union all 
    select match_id,team2_id as team_id, team2_score as team_score 
    from tblMatch 
)t1 
join tblTeam t2 
on t1.team_id = t2.team_id 
group by t2.team_id;

SQL Fiddle

Answer 4

You almost got it.

In your query I see fields that you don't include in your table (eg agegroup_id), but you only are a step of a solution: change your outter "select * from " for a: "select sum(totalpoints), team_title" and add a group by at the end: " group by team_title "

select sum(totalpoints) as totalpoints, team_title from  
(    
    SELECT sum(team1_score) as totalpoints, t.team_title     
    from tbl_team t     
    join tbl_tournamentmatches m
      on t.team_id = m.team1_id     
    --where tournament_id = 3 AND agegroup_id = 36     
    group by team1_id     
    union     
    SELECT sum(team2_score) as totalpoints, t.team_title     
    from tbl_team t     
    join tbl_tournamentmatches m 
      on t.team_id = m.team2_id     
    --where tournament_id = 3 AND agegroup_id = 36     
    group by team2_id 
) s 
group by team_title;