Which statement is true regarding the COALESCE function?（）A、It can have a maximum of five expressions in a list B、It returns the highest NOT NULL value in the list for all rows C、It requires that all expressions in the list must be of the same data type D

题目

Which statement is true regarding the COALESCE function?（）

A、It can have a maximum of five expressions in a list
B、It returns the highest NOT NULL value in the list for all rows
C、It requires that all expressions in the list must be of the same data type
D、It requires that at least one of the expressions in the list must have a NOT NULL value

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第1题：

Evaluate this SQL statement:In the statement, which capabilities of a SELECT statement are performed?()

A. Selection, projection, join

B. Difference, projection, join

C. Selection, intersection, join

D. Intersection, projection, join

E. Difference, projection, product

参考答案：A

第2题：

Examine the structure of the EMPLOYEES and DEPARTMENTS tables:Evaluate this SQL statement:Which SQL statement is equivalent to the above SQL statement?()

参考答案：C

第3题：

Which of the following financial statements reports information as of a specific date? ()

A. income statement

B. statement of owner's equity

C. statement of cash flows

D. balance sheet

参考答案：D

第4题：

Which three statements are true about terms in a policy?（）

A、The order of the terms in a policy is irrelevant.
B、The action is specified in a then statement.
C、Terms are optional in a policy.
D、The match condition can be identified with a from statement.
E、A from statement is mandatory in a term.

正确答案:B,C,D

第5题：

Which statement about a Service Profile is most accurate?（）

A、associated with a pool of blades
B、represents a group of physical blades
C、stores connectivity requirements

正确答案:C

第6题：

Exhibit:Examine the data in the EMPLOYEES table.Examine the subquery:SELECT last_nameFROM employeesWHERE salary IN (SELECT MAX(salary)FROM employeesGROUP BY department_id);Which statement is true?()

A. The SELECT statement is syntactically accurate.

B. The SELECT statement does not work because there is no HAVING clause.

C. The SELECT statement does not work because the column specified in the GROUP BY clause is not in the SELECT list.

D. The SELECT statement does not work because the GROUP BY clause should be in the main query and not in the subquery.

参考答案：A

第7题：

Which statement is TRUE concerning the flash point of a substance ________．

A.It is lower than the ignition temperature

B.It is the temperature at which a substance will spontaneously ignite

C.It is the temperature at which a substance，when ignited，will continue to burn

D.It is the temperature at which the released vapors will fall within the explosive range

正确答案：A

第8题：

Which of the tax concept(s) allow for the deferral of gains on nonrecognition transactions()?I. Capital Recovery Concept.II. Ability to Pay Concept.

A.Only statement I is correct

B.Only statement II is correct

C.Both statements are correct

D.Neither statement is correct

参考答案：D

第9题：

You issue this statement：ALTER DATABASE BACKUP CONTROLFILE TO TRACE； What does the statement generate？（）

A、A text copy of the control file.
B、A binary copy of the control file.
C、A file containing a SQL statement which will re-create the database.
D、A file containing a SQL statement which will re-create the control file.

正确答案:D

第10题：

Which statement is true about IBGP routers? （）

A、They must be fully meshed
B、They can be in a different AS
C、They must be directly connected

正确答案:C

Which statement is&#

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