Time: 1368 ms (64.33%) | Memory: 0B (100.00%) - LeetSync

Author: MatheusFerGo

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

@@ -0,0 +1,15 @@
+SELECT 
+    v.customer_id, 
+    COUNT(v.visit_id) AS count_no_trans
+FROM 
+    Visits AS v
+-- Juntamos todas as visitas com as transações
+LEFT JOIN 
+    Transactions AS t 
+ON 
+    v.visit_id = t.visit_id
+WHERE 
+    -- Se o ID da transação for nulo, significa que a visita não gerou compra
+    t.transaction_id IS NULL
+GROUP BY 
+    v.customer_id;