Computer Science · Database Management Systems
Which of the following symptoms directly indicates a misuse of the GROUP BY clause in a SQL query?
- 1An error stating that a column in the SELECT list is not contained in either an aggregate function or the GROUP BY clause✓
- 2The query returns a completely NULL output for all columns
- 3The query returns duplicate rows across the grouped fields
- 4The query fails to execute due to a missing ORDER BY clause at the end
Correct answer
An error stating that a column in the SELECT list is not contained in either an aggregate function or the GROUP BY clause
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