diff --git a/0627-swap-salary/0627-swap-salary.sql b/0627-swap-salary/0627-swap-salary.sql
new file mode 100644
index 0000000..b9f8842
--- /dev/null
+++ b/0627-swap-salary/0627-swap-salary.sql
@@ -0,0 +1,2 @@
+# Write your MySQL query statement below
+UPDATE Salary SET sex = CASE WHEN sex='f' THEN 'm' ELSE 'f' END 
\ No newline at end of file