1581

Author: OmPreetham

1581-customer-who-visited-but-did-not-make-any-transactions.sql

@@ -0,0 +1,14 @@
+# Write your MySQL query statement below
+SELECT 
+  customer_id, 
+  COUNT(*) AS count_no_trans 
+FROM 
+    Visits
+LEFT JOIN 
+    Transactions
+ON 
+    Visits.visit_id = Transactions.visit_id
+WHERE 
+    Transactions.visit_id IS NULL
+GROUP BY 
+    customer_id;