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Which three statements about subqueries are true?()

发布日期:2021-10-03

Which three statements about subqueries are true?(...
A

A single row subquery can retrieve only one column and one row.

B

A single row subquery can retrieve only one row but many columns.

C

A multiple row subquery can retrieve multiple rows and multiple columns.

D

A multiple row subquery can be compared by using the > operator.

E

A single row subquery can use the IN operator.

F

A multiple row subquery can use the = operator.

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