Leetcode Problem 2112. The Airport With the Most Traffic

2112. The Airport With the Most Traffic

Leetcode Solutions

Aggregating Traffic and Finding the Maximum

Use a WITH clause to create a Common Table Expression (CTE) that unions the departure_airport and arrival_airport columns into a single column named airport_id, along with their corresponding flights_count.
In the CTE, sum the flights_count for each airport_id to get the total traffic per airport.
Use a subquery to find the maximum total traffic value across all airports.
Select all airport_id from the CTE where the total traffic matches the maximum value found.
Return the result, which includes all airports with the most traffic.


erDiagram
    Flights {
        int departure_airport
        int arrival_airport
        int flights_count
        departure_airport--||--arrival_airport : is the primary key
    }

Using JOIN to Aggregate Traffic and Determine the Maximum

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Leetcode Problem 2112. The Airport With the Most Traffic

Leetcode Solutions

Aggregating Traffic and Finding the Maximum

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Using JOIN to Aggregate Traffic and Determine the Maximum

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