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What is true of using group functions on columns that contain NULL values?



A. Group functions on columns ignore NULL values
B. Group functions on columns returning dates include NULL values.
C. Group functions on columns returning numbers include NULL values
D. Group functions on columns cannot be accurately used on columns that contain NULL values
E.Group functions on columns include NULL values in calculations if you use the keyword INC_NULLS.

This question is part of oracle quiz-1
Asked by , Last updated: Mar 26, 2020

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John Smith

John Smith

Answered May 29, 2017

A. Group functions on columns ignore NULL values
 

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