diff --git a/1141-user-activity-for-the-past-30-days-i/1141-user-activity-for-the-past-30-days-i.sql b/1141-user-activity-for-the-past-30-days-i/1141-user-activity-for-the-past-30-days-i.sql
new file mode 100644
index 0000000..a089560
--- /dev/null
+++ b/1141-user-activity-for-the-past-30-days-i/1141-user-activity-for-the-past-30-days-i.sql
@@ -0,0 +1,2 @@
+# Write your MySQL query statement below
+SELECT activity_date AS day, COUNT(DISTINCT user_id) AS active_users FROM Activity WHERE activity_date BETWEEN DATE_SUB('2019-07-27', INTERVAL 29 DAY) AND '2019-07-27' GROUP BY activity_date;
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