Answer-first summary for fast verification
Answer: `select count (*) as TotalEvents, eventname, errorcode, errormessage from cloudtrail_logs where errorcode is not null and eventtime >= '2024-01-01T00:00:00Z' group by eventname, errorcode, errormessage order by TotalEvents desc limit 10;`
**Option A is CORRECT** because it filters only those log events that contain an error code (using `errorcode IS NOT NULL`) and restricts the results to logs from January 1, 2024 onward using `eventtime >= '2024-01-01T00:00:00Z'`. It groups the logs by `eventname`, `errorcode`, and `errormessage` to count how often each distinct error occurred, then sorts the grouped results in descending order of frequency (`ORDER BY TotalEvents DESC`). Finally, it limits the output to the 10 most frequent error types. This meets all the criteria: filters by date, includes only errors, and returns the top 10 by frequency.
Author: Ritesh Yadav
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Question 58/60
A data engineer created a table named cloudtrail_logs in Amazon Athena to query AWS CloudTrail logs and prepare data for audits. The data engineer needs to write a query to display errors with error codes that have occurred since the beginning of 2024. The query must return the 10 most recent errors.
Which query will meet these requirements?
A
select count (*) as TotalEvents, eventname, errorcode, errormessage from cloudtrail_logs where errorcode is not null and eventtime >= '2024-01-01T00:00:00Z' group by eventname, errorcode, errormessage order by TotalEvents desc limit 10;
B
select count (*) as TotalEvents, eventname, errorcode, errormessage from cloudtrail_logs where eventtime >= '2024-01-01T00:00:00Z' group by eventname, errorcode, errormessage order by TotalEvents desc limit 10;
C
select count (*) as TotalEvents, eventname, errorcode, errormessage from cloudtrail_logs where eventtime >= '2024-01-01T00:00:00Z' group by eventname, errorcode, errormessage order by eventname asc limit 10;
D
select count (*) as TotalEvents, eventname, errorcode, errormessage from cloudtrail_logs where errorcode is not null and eventtime >= '2024-01-01T00:00:00Z' group by eventname, errorcode, errormessage limit 10;
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