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SQL and relational databases · Multiple Choice
Difficulty: Easy
A column contains [NULL, 7, NULL, 9, NULL, 11, NULL, 13, NULL]. What does COUNT(column) return?
Aggregation
Nulls
Choose your answer
A
5
B
4
C
3
D
11
Check answer
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A column contains [NULL, 7, NULL, 9, NULL, 11, NULL, 13, NULL]. What does COUNT(column) return? | SWE Maxx