Oracle
1Z0-909 · Question #63
1Z0-909 Question #63: Real Exam Question with Answer & Explanation
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SQL Fundamentals
Question
Which two statements are true about aggregate functions?
Options
- ASUM () returns o if there are no rows to aggregate.
- BMAX () returns null if there are no rows to aggregate.
- CCOUNT (distinct) returns a count of the number of rows with different values including Null.
- DMIN () cannot use distinct when it executes as a Windows function.
- EAVG () does not allow use of the distinct option.
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Topics
#aggregate functions#NULL handling#function behavior#COUNT/AVG/SUM/MAX/MIN