diff --git a/0626-exchange-seats/0626-exchange-seats.sql b/0626-exchange-seats/0626-exchange-seats.sql
new file mode 100644
index 0000000..27ed500
--- /dev/null
+++ b/0626-exchange-seats/0626-exchange-seats.sql
@@ -0,0 +1,9 @@
+# Write your MySQL query statement below
+
+SELECT CASE
+    WHEN MOD(id, 2) = 0 THEN id - 1
+    WHEN LEAD(id) OVER(ORDER BY id) IS NOT NULL THEN id + 1
+    ELSE id
+END
+AS id, student FROM Seat ORDER BY id;
+