Time: 1542 ms (87.33%) | Memory: 0B (100.00%) - LeetSync

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

@@ -0,0 +1,7 @@
+# Write your MySQL query statement below
+select customer_id,count(customer_id) as count_no_trans
+from Visits as v
+left join Transactions as t
+on v.visit_id = t.visit_id
+where t.transaction_id is null
+group by customer_id;