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A column contains [NULL, 1, NULL, 3, NULL, 5, NULL]. What does COUNT(column) return? | SWE Maxx
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SQL and relational databases · Multiple Choice
Difficulty: Easy
A column contains [NULL, 1, NULL, 3, NULL, 5, NULL]. What does COUNT(column) return?
Aggregation
Nulls
Choose your answer
A
9
B
2
C
3
D
4
Check answer
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