🟡 Solve problem 626

Author: AF2B

sql/626.sql

@@ -0,0 +1,9 @@
+SELECT
+    CASE 
+        WHEN MOD(id, 2) = 1 AND id + 1 <= (SELECT MAX(id) FROM Seat) THEN id + 1
+        WHEN MOD(id, 2) = 0 THEN id - 1
+        ELSE id
+    END AS id,
+    student
+FROM Seat
+ORDER BY id ASC;