Create 626. Exchange Seats

Author: TylerJSimpson

sql/medium/626. Exchange Seats

@@ -0,0 +1,13 @@
+/* MS SQL */
+
+SELECT  CASE
+            WHEN id % 2 <> 0 AND id =   (SELECT COUNT(*)
+                                         FROM   seat)
+                THEN id
+            WHEN id % 2 = 0 
+                THEN id - 1
+            ELSE id + 1
+        END AS id,
+        student
+FROM    Seat
+ORDER   BY id