A tough query

Question

hey, I am trying to write a query, here is how my tables are set up:
I have a table called games, with a homeid, awayid, home_score, and away_score. For a team with a given id, say 7, I would like to run a query that returns its wins, losses and ties, all in one query. A win is a game where the home_score>away_score and the homeid=7, or where the away_score>home_score and the awayid = 7. Losses are the opposite, and ties occurs where the scores are even. Any help is appreciated. Thanks.
matt

Answer 1

like this?
SQL> create table score ( home_id number, away_id number, home_score number, away_score number );
Table created.
SQL> insert into score values ( 7, 1, 4, 2 );
1 row created.
SQL> insert into score values ( 7, 1, 2, 2 );
1 row created.
SQL> insert into score values ( 7, 1, 2, 0 );
1 row created.
SQL> insert into score values ( 7, 1, 2, 3 );
1 row created.
SQL> insert into score values ( 1, 7, 2, 3 );
1 row created.
SQL> select team_id, sum(win) wins, sum(loss) losses, sum(tie) ties
  2  from ( select home_id team_id,
  3                case when home_score > away_score then 1 else 0 end win,
  4                case when home_score < away_score then 1 else 0 end loss,
  5                case when home_score = away_score then 1 else 0 end tie
  6         from score
  7         union all
  8         select away_id,
  9                case when away_score > home_score then 1 else 0 end win,
10                case when away_score < home_score then 1 else 0 end loss,
11                case when away_score = home_score then 1 else 0 end tie
12         from score )
13  group by team_id;
   TEAM_ID       WINS     LOSSES       TIES
         1          1          3          1
         7          3          1          1