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小墨
2023-12-09 18:42:21 +08:00
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leetcode/problem/customer-who-visited-but-did-not-make-any-transactions.html
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@@ -7,7 +7,7 @@
| visit_id | int |
| customer_id | int |
+-------------+---------+
visit_id is the primary key for this table.
visit_id is the column with unique values for this table.
This table contains information about the customers who visited the mall.
</pre>
@@ -23,20 +23,20 @@ This table contains information about the customers who visited the mall.
| visit_id | int |
| amount | int |
+----------------+---------+
transaction_id is the primary key for this table.
transaction_id is column with unique values for this table.
This table contains information about the transactions made during the visit_id.
</pre>
<p>&nbsp;</p>
<p>Write an SQL query to find the IDs of the users who visited without making any transactions and the number of times they made these types of visits.</p>
<p>Write a&nbsp;solution to find the IDs of the users who visited without making any transactions and the number of times they made these types of visits.</p>
<p>Return the result table sorted in <strong>any order</strong>.</p>
<p>The query result format is in the following example.</p>
<p>The&nbsp;result format is in the following example.</p>
<p>&nbsp;</p>
<p><strong>Example 1:</strong></p>
<p><strong class="example">Example 1:</strong></p>
<pre>
<strong>Input:</strong>