The EMP table contains these columns:EMPLOYEE_ID NUMBER(4)EMPNAME VARCHAR2 (25)SALARY NUMBER(9,2)HIRE_DATE DATEYou query the database with this SQL statement:SELECT empname,hire_date HIREDATE, salaryFROM EMPORDER BY hire_date;How will the results be sorte

题目

The EMP table contains these columns:EMPLOYEE_ID NUMBER(4)EMPNAME VARCHAR2 (25)SALARY NUMBER(9,2)HIRE_DATE DATEYou query the database with this SQL statement:SELECT empname,hire_date HIREDATE, salaryFROM EMPORDER BY hire_date;How will the results be sorted?（）

A.randomly

B.ascending by date

C.descending by date

D.ascending alphabetically

E.descending alphabetically

相似考题

1. The EMP table contains these columns: EMPLOYEE_ID NUMBER(4) EMPNAME VARCHAR2 (25) SALARY NUMBER(9,2) HIRE_DATE DATE You query the database with this SQL statement: SELECT empname,hire_date HIREDATE, salary FROM EMP ORDER BY hire_date; How will the results be sorted?（）A、randomlyB、ascending by dateC、descending by dateD、ascending alphabeticallyE、descending alphabetically

2.单选题Examine the structure if the EMPLOYEES table: Column name Data Type Remarks EMPLOYEE_ID NUMBER NOT NULL, Primary Key EMP_NAME VARCHAR2(30) JOB_ID VARCHAR2(20) NOT NULL SAL NUMBER MGR_ID NUMBER References EMPLOYEE_ID column DEPARTMENT_ID NUMBER Foreign key to DEPARTMENT_ID column of the DEPARTMENTS table You need to create a view called EMP_VU that allows the user to insert rows through the view. Which SQL statement, when used to create the EMP_VU view, allows the user to insert rows?（）A CREATE VIEW emp_Vu AS SELECT employee_id, emp_name, department_id FROM employees WHERE mgr_id IN (102, 120);B CREATE VIEW emp_Vu AS SELECT employee_id, emp_name, job_id department_id FROM employees WHERE mgr_id IN (102, 120);C CREATE VIEW emp_Vu AS SELECT department_id, SUM(sal) TOTALSAL FROM employees WHERE mgr_id IN (102, 120) GROUP BY department_ id;D CREATE VIEW emp_Vu AS SELECT employee_id, emp_name, job_id, DISTINCT department_id FROM employees;

3.单选题The EMPLOYEES table has these columns: LAST NAME VARCHAR2(35) SALARY NUMBER(8,2) HIRE_DATE DATE Management wants to add a default value to the SALARY column. You plan to alter the table by using this SQL statement: ALTER TABLE EMPLOYEES MODIFY ( SALARY DEFAULT 5000); What is true about your ALTER statement?（）A Column definitions cannot be altered to add DEFAULT values.B A change to the DEFAULT value affects only subsequent insertions to the table.C Column definitions cannot be altered at add DEFAULT values for columns with a NUMBER data type.D All the rows that have a NULL value for the SALARY column will be updated with the value 5000.

4.单选题The EMP table contains these columns: EMPLOYEE_ID NUMBER(4) EMPNAME VARCHAR2 (25) SALARY NUMBER(9,2) HIRE_DATE DATE You query the database with this SQL statement: SELECT empname,hire_date HIREDATE, salary FROM EMP ORDER BY hire_date; How will the results be sorted?（）A randomlyB ascending by dateC descending by dateD ascending alphabeticallyE descending alphabetically

参考答案和解析
参考答案：B
更多“The EMP table contains these columns:EMPLOYEE_ID NUMBER(4)EMPNAME VARCHAR2 (25)SALARY NUMB ”相关问题

  • 第1题：

    单选题
    The EMP table contains these columns: EMPLOYEE_ID NUMBER(4) EMPNAME VARCHAR2 (25) SALARY NUMBER(9,2) HIRE_DATE DATE You query the database with this SQL statement: SELECT empname,hire_date HIREDATE, salary FROM EMP ORDER BY hire_date; How will the results be sorted?（）
    A

    randomly

    B

    ascending by date

    C

    descending by date

    D

    ascending alphabetically

    E

    descending alphabetically


    正确答案： D
    解析： 暂无解析

  • 第2题：

    单选题
    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
    解析： 暂无解析

  • 第3题：

    多选题
    Examine the structure of the EMPLOYEES table: EMPLOYEE_ID NUMBER NOT NULL, Primary Key EMP_NAME VARCHAR2(30) JOB_ID NUMBER/ SAL NUMBER MGR_ID NUMBER References EMPLOYEE_ID column DEPARTMENT_ID NUMBER Foreign key to DEPARTMENT_ID column of the DEPARTMENTS table You created a sequence called EMP_ID_SEQ in orderto populate sequential values for the EMPLOYEE_ID column of the EMPLOYEES table. Which two statements regarding the EMP_ID_SEQ sequence are true? （）
    A

    You cannot use the EMP_ID_SEQ sequence to populate the JOB_ID column.

    B

    The EMP_ID_SEQ sequence is invalidated when you modify the EMPLOYEE_ID column.

    C

    The EMP_ID_SEQ sequence is not affected by modifications to the EMPLOYEES table.

    D

    Any other column of NUMBER data type in your schema can use the EMP_ID_SEQ sequence.

    E

    The EMP_ID_SEQ sequence is dropped automatically when you drop the EMPLOYEES table.

    F

    The EMP_ID_SEQ sequence is dropped automatically when you drop the EMPLOYEE_ID column.


    正确答案： F,A
    解析： 暂无解析

  • 第4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5题：

    单选题
    Examine the structure of the EMPLOYEES table: EMPLOYEE_ID NUMBER Primary Key FIRST_NAME VARCHAR2(25) LAST_NAME VARCHAR2(25) HIRE_DATE DATE You issue these statements: CREATE table new_emp ( employe_id NUMBER, name VARCGAR2(30)); INSERT INTO new_emp SELECT employee_id, last_name from employees; Savepoint s1; UPDATE new_emp set name = UPPER(name); Savepoint s2; Delete from new_emp; Rollback to s2; Delete from new_emp where employee_id=180; UPDATE new_emp set name = 'James'; Rollback to s2; UPDATE new_emp sey name = 'James' Where employee_id=180; Rollback; At the end of this transaction, what is true?（）
    A

    You have no rows in the table.

    B

    You have an employee with the name of James.

    C

    You cannot roll back to the same savepoint more than once.

    D

    Your last update fails to update any rows because employee ID 180 was already deleted.


    正确答案： C
    解析： 暂无解析

  • 第6题：

    单选题
    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 DEPARMENT_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： B
    解析： 暂无解析

  • 第7题：

    多选题
    Examine the structure of the EMPLOYEES table: EMPLOYEE_ID NUMBER NOT NULL, Primary Key EMP_NAME VARCHAR2(30) JOB_ID NUMBER SAL NUMBER MGR_ID NUMBER References EMPLOYEE_ID column DEPARTMENT_ID NUMBER Foreign key to DEPARTMENT_ID column of the DEPARTMENTS table You created a sequence called EMP_ID_SEQ in order to populate sequential values for the EMPLOYEE_ID column of the EMPLOYEES table. Which two statements regarding the EMP_ID_SEQ sequence are true? （）
    A

    You cannot use the EMP_ID_SEQ sequence to populate the JOB_ID column.

    B

    The EMP_ID_SEQ sequence is invalidated when you modify the EMPLOYEE_ID column.

    C

    The EMP_ID_SEQ sequence is not affected by modifications to the EMPLOYEES table.

    D

    Any other column of NUMBER data type in your schema can use the EMP_ID_SEQ sequence.

    E

    The EMP_ID_SEQ sequence is dropped automatically when you drop the EMPLOYEES table.

    F

    The EMP_ID_SEQ sequence is dropped automatically when you drop the EMPLOYEE_ID column.


    正确答案： B,E
    解析： 暂无解析

  • 第8题：

    单选题
    Examine the structure of the EMPLOYEES, DEPARTMENTS, and TAX tables. EMPLOYEES NOT NULL, Primary EMPLOYEE_ID NUMBER Key VARCHAR2 EMP_NAME (30) VARCHAR2 JOB_ID (20) SALARY NUMBER References MGR_ID NUMBER EMPLOYEE_ID column DEPARTMENT_ID NUMBER Foreign key to DEPARTMENT_ID column of the DEPARTMENTS table DEPARTMENTS NOT NULL, DEPARTMENT_ID NUMBER Primary Key VARCHAR2 DEPARTMENT_NAME |30| References MGR_ID column MGR_ID NUMBER of the EMPLOYEES table TAX MIN_SALARY NUMBER MAX_SALARY NUMBER TAX_PERCENT NUMBER For which situation would you use a nonequijoin query?（）
    A

    To find the tax percentage for each of the employees.

    B

    To list the name, job id, and manager name for all the employees.

    C

    To find the name, salary, and department name of employees who are not working with Smith.

    D

    To find the number of employees working for the Administrative department and earning less then 4000.

    E

    To display name, salary, manager ID, and department name of all the employees, even if the employees do not have a department ID assigned.


    正确答案： C
    解析： 暂无解析

  • 第9题：

    单选题
    Which SQL statement defines a FOREIGN KEY constraint on the DEPTNO column of the EMP table?（）
    A

    CREATE TABLE EMP (empno NUMBER(4), ename VARCHAR2(35), deptno NUMBER(7,2) NOT NULL, CONSTRAINT emp_deptno_fk FOREIGN KEY deptno REFERENCES dept deptno);

    B

    CREATE TABLE EMP (empno NUMBER(4), ename VARCHAR2(35), deptno NUMBER(7,2) CONSTRAINT emp_deptno_fk REFERENCES dept (deptno));

    C

    CREATE TABLE EMP (empno NUMBER(4), ename VARCHAR2(35), deptno NUMBER(7,2) NOT NULL, CONSTRAINT emp_deptno_fk REFERENCES dept (deptno) FOREIGN KEY (deptno));

    D

    CREATE TABLE EMP (empno NUMBER(4), ename VARCHAR2(35), deptno NUMBER(7,2) FOREIGN KEY CONSTRAINT emp_deptno_fk REFERENCES dept (deptno));


    正确答案： A
    解析： 暂无解析

  • 第10题：

    多选题
    Examine the structure of the EMPLOYEES table: EMPLOYEE_ID NUMBER NOT NULL, Primary Key EMP_NAME VARCHAR2(30) JOB_ID NUMBER SAL NUMBER MGR_ID NUMBER References EMPLOYEE_ID column DEPARTMENT_ID NUMBER Foreign key to DEPARTMENT_ID column of the DEPARTMENTS table You created a sequence called EMP_ID_SEQ in order to populate sequential values for the EMPLOYEE_ID column of the EMPLOYEES table. Which two statements regarding the EMP_ID_SEQ sequence are true? （）
    A

    You cannot use the EMP_ID_SEQ sequence to populate the JOB_ID column.

    B

    The EMP_ID_SEQ sequence is invalidated when you modify the EMPLOYEE_ID column.

    C

    The EMP_ID_SEQ sequence is not affected by modifications to the EMPLOYEES table.

    D

    Any other column of NUMBER data type in your schema can use the EMP_ID_SEQ sequence.

    E

    The EMP_ID_SEQ sequence is dropped automatically when you drop the EMPLOYEES table.

    F

    The EMP_ID_SEQ sequence is dropped automatically when you drop the EMPLOYEE_ID column.


    正确答案： C,B
    解析： 暂无解析

  • 第11题：

    单选题
    Examine the structure of the EMPLOYEES table: EMPLOYEE_ID NUMBER Primary Key FIRST_NAME VARCHAR2(25) LAST_NAME VARCHAR2(25) HIRE_DATE DATE You issue these statements: CREATE table new_emp ( employee_id NUMBER, name VARCHAR2(30)); INSERT INTO new_emp SELECT employee_id , last_name from employees; Savepoint s1; UPDATE new_emp set name = UPPER(name); Savepoint s2; Delete from new_emp; Rollback to s2; Delete from new_emp where employee_id =180; UPDATE new_emp set name = 'James'; Rollback to s2; UPDATE new_emp set name = 'James' WHERE employee_id =180; Rollback; At the end of this transaction, what is true?（）
    A

    You have no rows in the table.

    B

    You have an employee with the name of James.

    C

    You cannot roll back to the same savepoint more than once.

    D

    Your last update fails to update any rows because employee ID 180 was already deleted.


    正确答案： D
    解析： 暂无解析

  • 第12题：

    单选题
    Examine the structure of the EMP_DEPT_VU view: Column Name Type Remarks EMPLOYEE_ID NUMBER From the EMPLOYEES table EMP_NAME VARCHAR2(30) From the EMPLOYEES table JOB_ID VARCHAR2(20) From the EMPLOYEES table SALARY NUMBER From the EMPLOYEES table DEPARTMENT_ID NUMBER From the DEPARTMENTS table DEPT_NAME VARCHAR2(30) From the DEPARTMENTS table Which SQL statement produces an error?（）
    A

    SELECT * FROM emp_dept_vu;

    B

    SELECT department_id, SUM(salary) FROM emp_dept_vu GROUP BY department _ id;

    C

    SELECT department_id, job_id, AVG(salary) FROM emp_dept_vu GROUP BY department _ id, job_id;

    D

    SELECT job_id, SUM(salary) FROM emp_dept_vu WHERE department_id IN (10,20) GROUP BY job_id HAVING SUM (salary) > 20000

    E

    None of the statements produce an error; all are valid.


    正确答案： A
    解析： 暂无解析

  • 第13题：

    单选题
    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 NULL SALARY NUMBER(9,2) NOT NULL COMMISION_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;


    正确答案： B
    解析： 暂无解析

  • 第14题：

    单选题
    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
    解析： 暂无解析

  • 第15题：

    单选题
    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 NULL SALARY NUMBER(9,2) NOT NULL COMMISION_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;


    正确答案： D
    解析： 暂无解析

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