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

发布日期:2021-08-05

What is true of using group functions on columns t...
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.

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此试题出现在

Oracle认证考试

1Z0-007

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