# #1581 Customer Who Visited but Did Not Make Any Transactions

#### <https://leetcode.com/problems/customer-who-visited-but-did-not-make-any-transactions/>

{% tabs %}
{% tab title="MS SQL Server" %}

```sql
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
```

{% endtab %}
{% endtabs %}