Time: 1215 ms (65.59%) | Memory: 0B (100.00%) - LeetSync

Author: sayandip20

1724-customer-who-visited-but-did-not-make-any-transactions/customer-who-visited-but-did-not-make-any-transactions.sql

@@ -0,0 +1,6 @@
+# Write your MySQL query statement below
+SELECT customer_id, COUNT(v.visit_id) AS count_no_trans 
+FROM Visits v
+NATURAL LEFT JOIN Transactions t
+WHERE t.visit_id IS NULL
+GROUP BY customer_id;