diff --git a/chapter3/spark.py b/chapter3/spark.py
index 1188536..f86ba98 100644
--- a/chapter3/spark.py
+++ b/chapter3/spark.py
@@ -16,6 +16,7 @@ def mysql_query(sql):
     return data
 
 def mysql_execute(sql):
+    print("execute: %s" % sql)
     db = pymysql.connect("localhost","root","123456789","sparkproject" )
     cursor = db.cursor()