Update team-scores-in-football-tournament.sql

Author: kamyu104

MySQL/team-scores-in-football-tournament.sql

@@ -1,28 +1,26 @@
 # Time:  O(nlogn)
 # Space: O(n)
 
-SELECT *
-FROM
-  (SELECT t.team_id,
-          t.team_name,
-          IFNULL(SUM(m.points), 0) AS num_points
-   FROM TEAMS t
-   LEFT JOIN
-     (SELECT host_team AS team_id,
-             CASE
-                 WHEN host_goals > guest_goals THEN 3
-                 WHEN host_goals = guest_goals THEN 1
-                 ELSE 0
-             END AS points
-      FROM Matches
-      UNION ALL SELECT guest_team AS team_id,
-                       CASE
-                           WHEN host_goals < guest_goals THEN 3
-                           WHEN host_goals = guest_goals THEN 1
-                           ELSE 0
-                       END AS points
-      FROM Matches) m
-   ON t.team_id = m.team_id
-   GROUP BY t.team_id) r
+SELECT t.team_id,
+      t.team_name,
+      IFNULL(SUM(m.points), 0) AS num_points
+FROM TEAMS t
+LEFT JOIN
+ (SELECT host_team AS team_id,
+         CASE
+             WHEN host_goals > guest_goals THEN 3
+             WHEN host_goals = guest_goals THEN 1
+             ELSE 0
+         END AS points
+  FROM Matches
+  UNION ALL SELECT guest_team AS team_id,
+                   CASE
+                       WHEN host_goals < guest_goals THEN 3
+                       WHEN host_goals = guest_goals THEN 1
+                       ELSE 0
+                   END AS points
+  FROM Matches) m
+ON t.team_id = m.team_id
+GROUP BY t.team_id
 ORDER BY num_points DESC,
          team_id;