diff --git a/1.sql b/1.sql
new file mode 100644
index 0000000..3729121
--- /dev/null
+++ b/1.sql
@@ -0,0 +1,8 @@
+select customer_id
+from Customer
+group by customer_id
+having count(distinct product_key) =
+(
+    select count(product_key)
+    from product
+)
\ No newline at end of file
diff --git a/2.sql b/2.sql
new file mode 100644
index 0000000..0c993a0
--- /dev/null
+++ b/2.sql
@@ -0,0 +1,9 @@
+# Write your MySQL query statement below
+with cte as (
+    select distinct product_id as p, min(year) as first_year
+    from sales
+    group by product_id
+)
+select product_id, first_year, quantity,price from sales
+join cte
+on product_id= p and year = first_year
\ No newline at end of file