单选题Evaluate these two SQL statements: SELECT last_name, salary , hire_date FROM EMPLOYEES ORDER BY salary DESC; SELECT last_name, salary , hire_date FROM EMPLOYEES ORDER BY 2 DESC; What is true about them?（）A The two statements produce identical results.B

题目
单选题
Evaluate these two SQL statements: SELECT last_name, salary , hire_date FROM EMPLOYEES ORDER BY salary DESC; SELECT last_name, salary , hire_date FROM EMPLOYEES ORDER BY 2 DESC; What is true about them?（）
A

The two statements produce identical results.

B

The second statement returns a syntax error.

C

There is no need to specify DESC because the results are sorted in descending order by default.

D

The two statements can be made to produce identical results by adding a column alias for the salary column in the second SQL statement.

相似考题

1.Evaluate this SQL statement:SELECT ename, sal, 12* sal+100 FROM emp;The SAL column stores the monthly salary of the employee. Which change must be made to the abovesyntax to calculate the annual compensation as "monthly salary plus a monthly bonus of $100, multiplied by 12"? （）A. No change is required to achieve the desired results.B. SELECT ename, sal, 12* (sal+100) FROM emp;C. SELECT ename, sal, (12* sal)+100 FROM emp;D. SELECT ename, sal +100,*12 FROM emp;

2.The EMPLOYEE tables has these columns:LAST_NAME VARCHAR2(35)SALARY NUMBER(8,2)COMMISSION_PCT NUMBER(5,2)You want to display the name and annual salary multiplied by the commission_pct for all employees. For records that have a NULL commission_pct, a zero must be displayed against the calculated column.Which SQL statement displays the desired results? （）A. SELECT last_name, (salary * 12) * commission_pct FROM EMPLOYEES;B. SELECT last_name, (salary * 12) * IFNULL(commission_pct, 0) FROM EMPLOYEES;C. SELECT last_name, (salary * 12) * NVL2(commission_pct, 0) FROM EMPLOYEES;D. SELECT last_name, (salary * 12) * NVL(commission_pct, 0) FROM EMPLOYEES;

3.Management has asked you to calculate the value 12*salary* commission_pct for all the employees in the EMP table. The EMP table contains these columns:LAST NAME VARCNAR2(35) NOT NULLSALARY NUMBER(9,2) NOT NULLCOMMISION_PCT NUMBER(4,2)Which statement ensures that a value is displayed in the calculated columns for all employees? （）A. SELECT last_name, 12*salary* commission_pct FROM emp;B. SELECT last_name, 12*salary* (commission_pct,0) FROM emp;C. SELECT last_name, 12*salary*(nvl(commission_pct,0)) FROM emp;D. SELECT last_name, 12*salary*(decode(commission_pct,0)) FROM emp;

4.The EMPLOYEES table contains these columns:LAST_NAME VARCHAR2 (25)SALARY NUMBER (6,2)COMMISSION_PCT NUMBER (6)You need to write a query that will produce these results:1. Display the salary multiplied by the commission_pct.2. Exclude employees with a zero commission_pct.3. Display a zero for employees with a null commission value. Evaluate the SQL statement:SELECT LAST_NAME, SALARY*COMMISSION_PCT FROM EMPLOYEESWHERE COMMISSION_PCT IS NOT NULL;What does the statement provide? （）A. All of the desired resultsB. Two of the desired resultsC. One of the desired resultsD. An error statement

更多“Evaluate these two SQL statements: SELECT last_name, salary”相关问题

  • 第1题：

    Examine the data in the EMPLOYEES table:Which three subqueries work? ()

    A. SELECT * FROM employees where salary > (SELECT MIN(salary) FROM employees GROUP BY department _ id);

    B. SELECT * FROM employees WHERE salary = (SELECT AVG(salary) FROM employees GROUP BY department _ id);

    C. SELECT distinct department_id FROM employees Where salary > ANY (SELECT AVG(salary) FROM employees GROUP BY department _ id);

    D. SELECT department_id FROM employees WHERE SALARY > ALL (SELECT AVG(salary) FROM employees GROUP BY department _ id);

    E. SELECT last_name FROM employees Where salary > ANY (SELECT MAX(salary) FROM employees GROUP BY department _ id);

    F. SELECT department_id FROM employees WHERE salary > ALL (SELECT AVG(salary) FROM employees GROUP BY ANG (SALARY));


    参考答案：C, D, E

  • 第2题：

    Evaluate these two SQL statements:What is true about them?()

    A. The two statements produce identical results.

    B. The second statement returns a syntax error.

    C. There is no need to specify DESC because the results are sorted in descending order by default.

    D. The two statements can be made to produce identical results by adding a column alias for the salary column in the second SQL statement.


    参考答案：A

  • 第3题：

    Click the Exhibit button and examine the data in the EMPLOYEES table.Which three subqueries work? ()

    A.SELECT * FROM employees where salary > (SELECT MIN(salary) FROM employees GROUP BY department_id);

    B.SELECT * FROM employees WHERE salary = (SELECT AVG(salary) FROM employees GROUP BY department_id);

    C.SELECT distinct department_id FROM employees WHERE salary > ANY (SELECT AVG(salary) FROM employees GROUP BY department_id);

    D.SELECT department_id FROM employees WHERE salary > ALL (SELECT AVG(salary) FROM employees GROUP BY department_id);

    E.SELECT last_name FROM employees WHERE salary > ANY (SELECT MAX(salary) FROM employees GROUP BY department_id);

    F.SELECT department_id FROM employees WHERE salary > ALL (SELECT AVG(salary) FROM employees GROUP BY AVG(SALARY));


    参考答案：C, D, E

  • 第4题：

    Which SQL statement generates the alias Annual Salary for the calculated column SALARY*12?（）

    • A、SELECT ename, salary*12 'Annual Salary' FROM employees;
    • B、SELECT ename, salary*12 "Annual Salary" FROM employees;
    • C、SELECT ename, salary*12 AS Annual Salary FROM employees;
    • D、SELECT ename, salary*12 AS INITCAP("ANNUAL SALARY") FROM employees

    正确答案:B

  • 第5题：

    Evaluate the SQL statement: SELECT LPAD(salary,10,*) FROM EMP WHERE EMP_ID = 1001; If the employee with the EMP_ID 1001 has a salary of 17000, what is displayed?（）

    • A、17000.00
    • B、17000*****
    • C、****170.00
    • D、**17000.00
    • E、an error statement

    正确答案:E

  • 第6题：

    Evaluate these two SQL statements: SELECT last_name, salary , hire_date FROM EMPLOYEES ORDER BY salary DESC; SELECT last_name, salary, hire_date FROM EMPLOYEES ORDER BY 2 DESC; What is true about them?（）

    • A、The two statements produce identical results.
    • B、The second statement returns a syntax error.
    • C、There is no need to specify DESC because the results are sorted in descending order by default.
    • D、The two statements can be made to produce identical results by adding a column alias for the salary column in the second SQL statement.

    正确答案:A

  • 第7题：

    Evaluate the SQL statement: SELECT LPAD (salary,10,*) FROM EMP WHERE EMP _ ID = 1001; If the employee with the EMP_ID 1001 has a salary of 17000, what is displayed?（）

    • A、17000.00
    • B、17000*****
    • C、****170.00
    • D、**17000.00
    • E、an error statement

    正确答案:D

  • 第8题：

    单选题
    The EMPLOYEES table contains these columns: LAST_NAME VARCHAR2 (25) SALARY NUMBER (6,2) COMMISSION_PCT NUMBER (6) You need to write a query that will produce these results: 1.Display the salary multiplied by the commission_pct. 2.Exclude employees with a zero commission_pct. 3.Display a zero for employees with a null commission value. Evaluate the SQL statement: SELECT LAST_NAME, SALARY*COMMISSION_PCT FROM EMPLOYEES WHERE COMMISSION_PCT IS NOT NULL; What does the statement provide?（）
    A

    all of the desired results

    B

    two of the desired results

    C

    one of the desired results

    D

    an error statement


    正确答案： A
    解析： 暂无解析

  • 第9题：

    多选题
    Examine the data in the EMPLOYEES table: Which three subqueries work? （）
    A

    SELECT * FROM employees where salary > (SELECT MIN(salary) FROM employees GROUP BY department _ id);

    B

    SELECT * FROM employees WHERE salary = (SELECT AVG(salary) FROM employees GROUP BY department _ id);

    C

    SELECT distinct department_id FROM employees Where salary > ANY (SELECT AVG(salary) FROM employees GROUP BY department _ id);

    D

    SELECT department_id FROM employees WHERE SALARY > ALL (SELECT AVG(salary) FROM employees GROUP BY department _ id);

    E

    SELECT last_name FROM employees Where salary > ANY (SELECT MAX(salary) FROM employees GROUP BY department _ id);

    F

    SELECT department_id FROM employees WHERE salary > ALL (SELECT AVG(salary) FROM employees GROUP BY ANG (SALARY));


    正确答案： D,E
    解析： 暂无解析

  • 第10题：

    单选题
    Evaluate these two SQL statements: SELECT last_name, salary , hire_date FROM EMPLOYEES ORDER BY salary DESC; SELECT last_name, salary , hire_date FROM EMPLOYEESORDER BY 2 DESC; What is true about them?（）
    A

    The two statements produce identical results.

    B

    The second statement returns a syntax error.

    C

    There is no need to specify DESC because the results are sorted in descending order by default.

    D

    The two statements can be made to produce identical results by adding a column alias for the salary column in the second SQL statement.


    正确答案： A
    解析： 暂无解析

  • 第11题：

    单选题
    Evaluate the SQL statement: SELECT LPAD (salary,10,*) FROM EMP WHERE EMP _ ID = 1001; If the employee with the EMP_ID 1001 has a salary of 17000, what is displayed?（）
    A

    17000.00

    B

    17000*****

    C

    ****170.00

    D

    **17000.00

    E

    an error statement


    正确答案： A
    解析： 暂无解析

  • 第12题：

    多选题
    Examine the data in the EMPLOYEES table: LAST_NAME DEPARTMENT_ID SALARY Getz 10 3000 Davis 20 1500 Bill 20 2200 Davis 30 5000 ... Which three subqueries work? （）
    A

    SELECT * FROM employees where salary > (SELECT MIN(salary) FROM employees GROUP BY department _ id);

    B

    SELECT * FROM employees WHERE salary = (SELECT AVG(salary) FROM employees GROUP BY department _ id);

    C

    SELECT distinct department_id FROM employees Where salary > ANY (SELECT AVG(salary) FROM employees GROUP BY department _ id);

    D

    SELECT department_id FROM employees WHERE SALARY > ALL (SELECT AVG(salary) FROM employees GROUP BY department _ id);

    E

    SELECT last_name FROM employees Where salary > ANY (SELECT MAX(salary) FROM employees GROUP BY department _ id);

    F

    SELECT department_id FROM employees WHERE salary > ALL (SELECT AVG(salary) FROM employees GROUP BY ANG (SALARY));


    正确答案： D,B
    解析： 暂无解析

  • 第13题：

    Evaluate the SQL statement:SELECT LPAD (salary,10,*)FROM EMPWHERE EMP _ ID = 1001;If the employee with the EMP_ID 1001 has a salary of 17000, what is displayed?()

    A. 17000.00

    B. 17000*****

    C. ****170.00

    D. **17000.00

    E. an error statement


    参考答案：D

  • 第14题：

    Examine the data in the EMPLOYEES table:LAST_NAME DEPARTMENT_ID SALARYGetz 10 3000Davis 20 1500Bill 20 2200Davis 30 5000...Which three subqueries work? ()

    A. SELECT * FROM employees where salary > (SELECT MIN(salary) FROM employees GROUP BY department _ id);

    B. SELECT * FROM employees WHERE salary = (SELECT AVG(salary) FROM employees GROUP BY department _ id);

    C. SELECT distinct department_id FROM employees Where salary > ANY (SELECT AVG(salary) FROM employees GROUP BY department _ id);

    D. SELECT department_id FROM employees WHERE SALARY > ALL (SELECT AVG(salary) FROM employees GROUP BY department _ id);

    E. SELECT last_name FROM employees Where salary > ANY (SELECT MAX(salary) FROM employees GROUP BY department _ id);

    F. SELECT department_id FROM employees WHERE salary > ALL (SELECT AVG(salary) FROM employees GROUP BY ANG (SALARY));


    参考答案：C, D, E

  • 第15题：

    The EMPLOYEES table contains these columns: LAST_NAME VARCHAR2 (25) SALARY NUMBER (6,2) COMMISSION_PCT NUMBER (6) You need to write a query that will produce these results: 1.Display the salary multiplied by the commission_pct. 2.Exclude employees with a zero commission_pct. 3.Display a zero for employees with a null commission value. Evaluate the SQL statement: SELECT LAST_NAME, SALARY*COMMISSION_PCT FROM EMPLOYEES WHERE COMMISSION_PCT IS NOT NULL; What does the statement provide?（）

    • A、all of the desired results
    • B、two of the desired results
    • C、one of the desired results
    • D、an error statement

    正确答案:C

  • 第16题：

    The EMP table contains these columns: LAST_NAME VARCHAR2 (25) SALARY NUMBER (6,2) DEPARTMENT_ID NUMBER (6) You need to display the employees who have not been assigned to any department. You write the SELECT statement: SELECT LAST_NAME, SALARY, DEPARTMENT_ID FROM EMP WHERE DEPARTMENT_ID = NULL; What is true about this SQL statement ?（）

    • A、The SQL statement displays the desired results.
    • B、The column in the WHERE clause should be changed to display the desired results.
    • C、The operator in the WHERE clause should be changed to display the desired results.
    • D、The WHERE clause should be changed to use an outer join to display the desired results.

    正确答案:C

  • 第17题：

    The EMPLOYEE tables has these columns: LAST_NAME VARCHAR2(35) SALARY NUMBER(8,2) COMMISSION_PCT NUMBER(5,2) You want to display the name and annual salary multiplied by the commission_pct for all employees. For records that have a NULL commission_pct, a zero must be displayed against the calculated column. Which SQL statement displays the desired results?（）

    • A、SELECT last_name, (salary * 12) * commission_pct FROM EMPLOYEES;
    • B、SELECT last_name, (salary * 12) * IFNULL(commission_pct, 0) FROM EMPLOYEES;
    • C、SELECT last_name, (salary * 12) * NVL2(commission_pct, 0) FROM EMPLOYEES;
    • D、SELECT last_name, (salary * 12) * NVL(commission_pct, 0) FROM EMPLOYEES;

    正确答案:D

  • 第18题：

    Examine the data in the EMPLOYEES table: LAST_NAME DEPARTMENT_ID SALARY Getz 10 3000 Davis 20 1500 Bill 20 2200 Davis 30 5000 ... Which three subqueries work? （）

    • A、SELECT * FROM employees where salary > (SELECT MIN(salary) FROM employees GROUP BY department _ id);
    • B、SELECT * FROM employees WHERE salary = (SELECT AVG(salary) FROM employees GROUP BY department _ id);
    • C、SELECT distinct department_id FROM employees Where salary > ANY (SELECT AVG(salary) FROM employees GROUP BY department _ id);
    • D、SELECT department_id FROM employees WHERE SALARY > ALL (SELECT AVG(salary) FROM employees GROUP BY department _ id);
    • E、SELECT last_name FROM employees Where salary > ANY (SELECT MAX(salary) FROM employees GROUP BY department _ id);
    • F、SELECT department_id FROM employees WHERE salary > ALL (SELECT AVG(salary) FROM employees GROUP BY ANG (SALARY));

    正确答案:C,D,E

  • 第19题：

    客户需要计算EMP表中所有职工12*salary* commission_pct的值.EMP表结构如下：LAST NAME VARCNAR2（35）NOT NULL SALARY NUMBER（9，2）NOT NULL COMMISION_PCTNUMBER（4，2）哪个语句可以查询计算EMP表中所有职工行？（）

    • A、SELECT last_name，12*salary* commission_pct FROM emp
    • B、SELECT last_name，12*salary*（commission_pct，0）FROM emp
    • C、SELECT last_name，12*salary*（nvl（commission_pct，0））FROM emp如果oracle第一个参数为空那么显示第二个参数的值，如果第一个参数的值不为空，则显示第一个参数本来的值
    • D、SELECT last_name，12*salary*（decode（commission_pct，0））FROM emp

    正确答案:C

  • 第20题：

    单选题
    Evaluate the SQL statement: SELECT LPAD(salary,10,*) FROM EMP WHERE EMP_ID = 1001; If the employee with the EMP_ID 1001 has a salary of 17000, what is displayed?（）
    A

    17000.00

    B

    17000*****

    C

    ****170.00

    D

    **17000.00

    E

    an error statement


    正确答案： C
    解析： 暂无解析

  • 第21题：

    单选题
    Evaluate the SQL statement: SELECT LPAD(salary,10,*) FROM EMP WHERE EMP_ID = 1001; If the employee with the EMP_ID 1001 has a salary of 17000, what is displayed?（）
    A

    17000.00

    B

    17000*****

    C

    ****170.00

    D

    **17000.00

    E

    an error statement


    正确答案： B
    解析： 暂无解析

  • 第22题：

    单选题
    The EMPLOYEES table contains these columns: LAST_NAME VARCHAR2 (25) SALARY NUMBER (6,2) COMMISSION_PCT NUMBER (6) You need to write a query that will produce these results: 1.Display the salary multiplied by the commission_pct. 2.Exclude employees with a zero commission_pct. 3.Display a zero for employees with a null commission value. Evaluate the SQL statement: SELECT LAST_NAME, SALARY*COMMISSION_PCT FROM EMPLOYEES WHERE COMMISSION_PCT IS NOT NULL; What does the statement provide?（）
    A

    all of the desired results

    B

    two of the desired results

    C

    one of the desired results

    D

    an error statement


    正确答案： A
    解析： 暂无解析

  • 第23题：

    单选题
    Evaluate these two SQL statements: What is true about them?（）
    A

    The two statements produce identical results.

    B

    The second statement returns a syntax error.

    C

    There is no need to specify DESC because the results are sorted in descending order by default.

    D

    The two statements can be made to produce identical results by adding a column alias for the salary column in the second SQL statement.


    正确答案： D
    解析： 暂无解析

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