Crucial Exams

AWS Certified Data Engineer Associate DEA-C01 Practice Question

An Amazon Athena table named clickstream contains columns session_id string, page string, event_time timestamp, and load_time_ms int. A data engineer must return the five pages with the highest average load_time_ms recorded in the last 7 days, but only for pages that have at least 100 distinct sessions. Which SQL query satisfies the requirement?

  • SELECT page,
       AVG(load_time_ms) AS avg_load
FROM clickstream
GROUP BY page
HAVING COUNT(DISTINCT session_id) >= 100
   AND event_time >= current_timestamp - INTERVAL '7' day
ORDER BY avg_load DESC
LIMIT 5;

  • SELECT page,
       AVG(load_time_ms) AS avg_load
FROM clickstream
WHERE event_time >= current_timestamp - INTERVAL '7' day
GROUP BY page
HAVING COUNT(DISTINCT session_id) >= 100
ORDER BY COUNT(DISTINCT session_id) DESC
LIMIT 5;

  • SELECT page,
       AVG(load_time_ms) AS avg_load
FROM clickstream
WHERE event_time >= current_timestamp - INTERVAL '7' day
  AND COUNT(DISTINCT session_id) >= 100
GROUP BY page
ORDER BY avg_load DESC
LIMIT 5;

  • SELECT page,
       AVG(load_time_ms) AS avg_load
FROM clickstream
WHERE event_time >= current_timestamp - INTERVAL '7' day
GROUP BY page
HAVING COUNT(DISTINCT session_id) >= 100
ORDER BY avg_load DESC
LIMIT 5;
AWS Certified Data Engineer Associate DEA-C01
Data Operations and Support
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