Explanation:
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.
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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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