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DA0-002 · Question #49
DA0-002 Question #49: Real Exam Question with Answer & Explanation
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Data Analysis
Question
A table contains several rows of cellular numbers with call timestamps, call durations, called numbers, and carriers of the called number. Which of the following allows a data analyst to sort the cellular numbers based on the carriers of the called numbers and include the total call durations?
Options
- ASELECT cellular_number, called_number_carrier, SUM(call_duration) FROM calls GROUP BY
- BSELECT cellular_number, SUM(call_duration) FROM calls GROUP BY call_duration ORDERBY
- CSELECT cellular_number, called_number_carrier, SUM(call_duration) FROM calls GROUP BY
- DSELECT cellular_number, called_number_carrier, SUM(call_duration) FROM calls GROUP BY
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Topics
#SQL#Aggregate Functions#GROUP BY Clause#Data Querying