Leetcode Problem 2752. Customers with Maximum Number of Transactions on Consecutive Days

2752. Customers with Maximum Number of Transactions on Consecutive Days

Leetcode Solutions

Identifying Consecutive Transactions Using Date Differences and Grouping

Use a common table expression (CTE) to calculate the difference in days between each transaction and the previous transaction for the same customer.
Create a grouping identifier for consecutive transactions by subtracting the row number from the transaction date (converted to days).
Use another CTE to count the number of transactions in each group for each customer.
Determine the maximum count of consecutive transactions.
Select the customers who have this maximum count of consecutive transactions.
Order the result by customer_id in ascending order.


erDiagram
    Transactions {
        int transaction_id PK "Unique transaction identifier"
        int customer_id "Identifier of the customer"
        date transaction_date "Date of the transaction"
        int amount "Amount of the transaction"
    }

Using Recursive CTE to Track Consecutive Transactions

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Leetcode Problem 2752. Customers with Maximum Number of Transactions on Consecutive Days

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Identifying Consecutive Transactions Using Date Differences and Grouping

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Using Recursive CTE to Track Consecutive Transactions

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