Update 01194-tournament-winners.sql

Hard/01194-tournament-winners.sql

@@ -24,3 +24,38 @@ from cte
 where rnk = 1
 
 -- wayfair- 1
+
+
+#####################################################################################
+
+
+WITH
+    s AS (
+        SELECT first_player AS player_id, first_score AS score, group_id
+        FROM
+            Matches AS m
+            JOIN Players AS p ON m.first_player = p.player_id
+        UNION ALL
+        SELECT second_player AS player_id, second_score AS score, group_id
+        FROM
+            Matches AS m
+            JOIN Players AS p ON m.second_player = p.player_id
+    ),
+    t AS (
+        SELECT group_id, player_id, SUM(score) AS scores
+        FROM s
+        GROUP BY player_id
+    ),
+    p AS (
+        SELECT
+            group_id,
+            player_id,
+            RANK() OVER (
+                PARTITION BY group_id
+                ORDER BY scores DESC, player_id
+            ) AS rk
+        FROM t
+    )
+SELECT group_id, player_id
+FROM p
+WHERE rk = 1;