Go to Athena console.
Select Preview table to examine the data in yellow_tripdata table.
On the Query editor page, run the following queries to examine the data.
SELECT COUNT(*) "Count"
FROM yellow_tripdata;
SELECT DATE_TRUNC('month', pickup_datetime) "Period",
COUNT(*) "Total Records"
FROM yellow_tripdata
GROUP BY DATE_TRUNC('month', pickup_datetime)
ORDER BY 1;