LeetCode2752Customers with Maximum Number of Transactions on Con
Description
Table: Transactions
+------------------+------+
| Column Name | Type |
+------------------+------+
| transaction_id | int |
| customer_id | int |
| transaction_date | date |
| amount | int |
+------------------+------+
transaction_id is the primary key of this table. Each row contains information about transactions that includes unique (customer_id, transaction_date) along with the corresponding customer_id and amount.
Write an SQL query to find all customer_id who made the maximum number of transactions on consecutive days.
Return all customer_id with the maximum number of consecutive transactions. Order the result table by customer_id in ascending order.
The query result format is in the following example.
Example 1:
Input:
Transactions table:
+----------------+-------------+------------------+--------+
| transaction_id | customer_id | transaction_date | amount |
+----------------+-------------+------------------+--------+
| 1 | 101 | 2023-05-01 | 100 |
| 2 | 101 | 2023-05-02 | 150 |
| 3 | 101 | 2023-05-03 | 200 |
| 4 | 102 | 2023-05-01 | 50 |
| 5 | 102 | 2023-05-03 | 100 |
| 6 | 102 | 2023-05-04 | 200 |
| 7 | 105 | 2023-05-01 | 100 |
| 8 | 105 | 2023-05-02 | 150 |
| 9 | 105 | 2023-05-03 | 200 |
+----------------+-------------+------------------+--------+
Output:
+-------------+
| customer_id |
+-------------+
| 101 |
| 105 |
+-------------+
Explanation:
- customer_id 101 has a total of 3 transactions, and all of them are consecutive. - customer_id 102 has a total of 3 transactions, but only 2 of them are consecutive. - customer_id 105 has a total of 3 transactions, and all of them are consecutive. In total, the highest number of consecutive transactions is 3, achieved by customer_id 101 and 105. The customer_id are sorted in ascending order.
