The EMPLOYEES table contains these columns: EMPLOYEE_ID NUMBER(4) LAST_NAME VARCHAR2 (25) JOB_ID VARCHAR2(10) You want to search for strings that contain 'SA_' in the JOB_ID column. Which SQL statement do you use?（） A、SELECT employee_id, last_name, job_

题目

The EMPLOYEES table contains these columns: EMPLOYEE_ID NUMBER(4) LAST_NAME VARCHAR2 (25) JOB_ID VARCHAR2(10) You want to search for strings that contain 'SA_' in the JOB_ID column. Which SQL statement do you use?（）

  • A、SELECT employee_id, last_name, job_id FROM employees WHERE job_id LIKE '%SA/_%' ESCAPE '/';
  • B、SELECT employee_id, last_name, job_id FROM employees WHERE job_id LIKE '%SA_';
  • C、SELECT employee_id, last_name, job_id FROM employees WHERE job_id LIKE '%SA_' ESCAPE "/";
  • D、SELECT employee_id, last_name, job_id FROM employees WHERE job_id = '%SA_';
相似考题

1.You added a PHONE_NUMBER column of NUMBER data type to an existing EMPLOYEES table. The EMPLOYEES table already contains records of 100 employees. Now, you want to enter the phone numbers of each of the 100 employees into the table. Some of the employees may not have a phone number available. Which data manipulation operation do you perform? （）A. MERGEB. INSERTC. UPDATED. ADDE. ENTERF. You cannot enter the phone numbers for the existing employee records.

2.The EMPLOYEES table contains these columns: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:What does the statement provide?（）A. All of the desired resultsB. Two of the desired resultsC. One of the desired resultsD. An error statement

3.Examine the data in the EMPLOYEES and DEPARTMENTS tables:Also examine the SQL statements that create the EMPLOYEES and DEPARTMENTS tables:On the EMPLOYEES table, EMPLOYEE_ID is the primary key.MGR_ID is the ID of managers and refers to the EMPLOYEE_ID.DEPT_ID is foreign key to DEPARTMENT_ID column of the DEPARTMENTS table.On the DEPARTMENTS table, DEPARTMENT_ID is the primary key.Examine this DELETE statement:What happens when you execute the DELETE statement?（）A. Only the row with department ID 40 is deleted in the DEPARTMENTS table.B. The statement fails because there are child records in the EMPLOYEES table with department ID 40.C. The row with department ID 40 is deleted in the DEPARTMENTS table. Also the rows with employee IDs 110 and 106 are deleted from the EMPLOYEES table.D. The row with department ID 40 is deleted in the DEPARTMENTS table. Also the rows with employee IDs 106 and 110 and the employees working under employee 110 are deleted from the EMPLOYEES table.E. The row with department ID 40 is deleted in the DEPARTMENTS table. Also all the rows in the EMPLOYEES table are deleted.F. The statement fails because there are no columns specifies in the DELETE clause of the DELETE statement.

4.Observe the structure of the table employees:The table contains 8475 records.One of the employees wants to know the names of all employees of the company. For this, he fires the following query:SELECT * FROM EMPLOYEES ORDER BY emp_fname;Since the operation performed on executing the query cannot fit into memory, it requires disk space to complete the operation.Which of the following types of segments will Oracle allocate to complete the operation and to provide the required result?（）A. Rollback segmentB. Temporary segmentC. Data segmentD. Index segment

更多“The EMPLOYEES table contains th”相关问题

  • 第1题：

    在 HTML语言中，给表格添加行的标记是（ ）。

    A.<TR></TR> B.<TD></TD>C.<Table></Table > D.<TH></TH>


    正确答案：A

  • 第2题：

    设置表格边框色彩的HTML代码是（）

    • A、<table color=#> 
    • B、<th bordercolor=#> 
    • C、<table bordercolor=#> 
    • D、<th color=#>

    正确答案:C

  • 第3题：

    Which two statements complete a transaction?（）

    • A、DELETE employees;
    • B、DESCRIBE employees;
    • C、ROLLBACK TO SAVE POINT C;
    • D、GRANT SELECT ON employees TO SCOTH
    • E、ALTER TABLE employees SET UNUSED COLUMN sal;
    • F、Select MAX(sal) FROM employees WHERE department _ id 20;

    正确答案:D,E

  • 第4题：

    You added a PHONE_NUMBER column of NUMBER data type to an existing EMPLOYEES table. The EMPLOYEES table already contains records of 100 employees. Now, you want to enter the phone numbers of each of the 100 employees into the table. Some of the employees may not have a phone number available. Which data manipulation operation do you perform?（）

    • A、MERGE
    • B、INSERT
    • C、UPDATE
    • D、ADD
    • E、ENTER
    • F、You cannot enter the phone numbers for the existing employee records.

    正确答案:C

  • 第5题：

    Which two operations can be flashed back using the Flashback technology？（）

    • A、DROP USER SMITH；
    • B、DROP TABLE EMPLOYEES；
    • C、DROP TABLESPACE USERS；
    • D、ALTER TABLE SALES_REP DROP PARTITION P1；
    • E、ALTER TABLE EMPLOYEES DROP COLUMN DESIG_ID；

    正确答案:A,B

  • 第6题：

    You have just performed a FLASHBACK TABLE operation using the following command：   flashback table employees to scn 123456；   The employees table has triggers associated with it.  Which of the following statements is true regarding the state of the triggers during the Flashback Table operation？（）  

    • A、 All the triggers are disabled.
    • B、 All the triggers are enabled by default.
    • C、 Enabled triggers remain enabled and disabled triggers remain disabled.
    • D、 Triggers are deleted when a Flashback Table operation is performed.

    正确答案:A

  • 第7题：

    单选题
    Examine the statement:Create synonym emp for hr. employees;What happens when you issue the statement?（）
    A

    An error is generated.

    B

    You will have two identical tables in the HR schema with different names.

    C

    You create a table called employees in the HR schema based on you EMP table.

    D

    You create an alternative name for the employees table in the HR schema in your own schema.


    正确答案： A
    解析： 暂无解析

  • 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
    Which two statements complete a transaction?（）
    A

    DELETE employees;

    B

    DESCRIBE employees;

    C

    ROLLBACK TO SAVEPOINT C;

    D

    GRANT SELECT ON employees TO SCOTT;

    E

    ALTER TABLE employees   SET UNUSED COLUMN sal;

    F

    Select MAX(sal)   FROM employees   WHERE department_id = 20;


    正确答案： C,E
    解析： 暂无解析

  • 第10题：

    单选题
    The EMPLOYEES table is stored in the SAMPLE tablespace.  The corresponding IPK_EMP index for the EMPLOYEES table’s primary key is stored in the INDX tablespace.  Out of 12 partitions， only partition P1 of the SALES table is stored in the SAMPLE tablespace.  Which object will be exported by this command？（）   exp system/manager tablespaces=SAMPLE
    A

    Only the EMPLOYEES table.

    B

    Only the EMPLOYEES table and its corresponding primary key index.

    C

    The EMPLOYEES table and partition P1.

    D

    The EMPLOYEES table， IPK_EMP index， and the SALES table.


    正确答案： B
    解析： 暂无解析

  • 第11题：

    单选题
    The EMPLOYEES table has six indexes and DML operations are slow. Which command begins monitoring the EMPLOYEE_IDX_FK index to determine whether it has been used by an execution plan？（）
    A

    ALTER TABLE employees monitor index employee_idx_fk; 

    B

    ALTER INDEX employee_idx_fk monitoring on; 

    C

    ALTER TABLE employees monitor all indexes; 

    D

    ALTER INDEX employee_idx_fk monitoring usage; 


    正确答案： D
    解析： 暂无解析

  • 第12题：

    单选题
    You executed the following SQL statement to shrink the EMPLOYEES table segment stored in the EXAMPLE tablespace: ALTER TABLE employees SHRINK SPACE CASCADE; Which statement is correct in this scenario?（）
    A

    The data in the segment will be compacted but the high water mark will not be adjusted 

    B

    The EMPLOYEES table will be changed to read-only mode during the shrink operation 

    C

    The indexes created on the EMPLOYEES table will need to be rebuilt after the shrink operation is over

    D

    The shrink behavior will be cascaded to all dependent segments of the table that support a shrink operation 

    E

    Data manipulation language (DML) operations will not be possible on the EMPLOYEES table during the COMPACTION phase of the shrink operation


    正确答案： C
    解析： 暂无解析

  • 第13题：

    在HTML语言中，给表格添加行的标记是______。

    A.＜TR＞＜/TR＞
    B.＜TD＞＜/TD＞
    C.＜Table＞＜Table＞
    D.＜TH＞＜/TH＞

    答案：A
    解析：
    本题考查HTML语言中关于表格标记的知识。网页中经常要用到表格，＜table＜标记定义HTML表格。一个简单的HTML表格由table标记以及一个或多个tr、th或td标记组成，其中：tr标记定义表格行，th标记定义表头，td标记定义表格单元格。

  • 第14题：

    设置表格边框色彩的亮度的HTML代码是（）

    • A、<th bordercolorlight=#> 
    • B、<table bordercolor=#> 
    • C、<th bordercolor=#> 
    • D、<table bordercolorlight=#>

    正确答案:D

  • 第15题：

    Which two statements complete a transaction? （）

    • A、DELETE employees;
    • B、DESCRIBE employees;
    • C、ROLLBACK TO SAVEPOINT C;
    • D、GRANT SELECT ON employees TO SCOTT;
    • E、ALTER TABLE employees SET UNUSED COLUMN sal;
    • F、SELECT MAX(sal) FROM employees WHERE department_id = 20;

    正确答案:D,E

  • 第16题：

    表格语法格式正确的是（）。

    • A、〈table〉〈tr〉〈td〉内容〈/td〉〈/tr〉〈/table〉
    • B、〈table〉〈tr〉内容〈/tr〉〈td〉内容〈/td〉〈/table〉
    • C、〈table〉〈tr〉〈th〉内容〈/th〉〈td〉内容〈/td〉〈/tr〉〈/table〉
    • D、〈table〉〈tr〉〈td〉〈th〉内容〈/th〉〈/td〉〈/tr〉〈/table〉

    正确答案:A,C

  • 第17题：

    User Scott has updated the salary of one of the employees in the EMPLOYEES table and has not committed the transaction. What are the two types of locks that this scenario would lead to？（）

    • A、null lock on the row being updated
    • B、null lock on the table containing the row
    • C、ROW SHARE lock for the row being updated
    • D、ROW EXCLUSIVE lock for the row being updated
    • E、shared row-exclusive lock for the row being updated
    • F、a shareable table lock for the table containing the row
    • G、exclusive table-level lock for the table containing the row

    正确答案:D,F

  • 第18题：

    多选题
    User Scott has updated the salary of one of the employees in the EMPLOYEES table and has not committed the transaction. What are the two types of locks that this scenario would lead to？（）
    A

    null lock on the row being updated

    B

    null lock on the table containing the row

    C

    ROW SHARE lock for the row being updated

    D

    ROW EXCLUSIVE lock for the row being updated

    E

    shared row-exclusive lock for the row being updated

    F

    a shareable table lock for the table containing the row

    G

    exclusive table-level lock for the table containing the row


    正确答案： G,C
    解析： 暂无解析

  • 第19题：

    单选题
    You own a table called EMPLOYEES with this table structure: EMPLOYEE_ID NUMBER Primary Key FIRST_NAME VARCHAR2(25) LAST_NAME VARCHAR2(25) HIRE_DATE DATE What happens when you execute this DELETE statement? DELETE employees; （）
    A

    You get an error because of a primary key violation.

    B

    The data and structure of the EMPLOYEES table are deleted.

    C

    The data in the EMPLOYEES table is deleted but not the structure.

    D

    You get an error because the statement is not syntactically correct.


    正确答案： B
    解析： 暂无解析

  • 第20题：

    单选题
    You own a table called EMPLOYEES with this table structure: EMPLOYEE_ID NUMBER Primary Key FIRST_NAME VARCHAR2(25) LAST_NAME VARCHAR2(25) HIRE_DATE DATE What happens when you execute this DELETE statement? DELETE employees; （）
    A

    You get an error because of a primary key violation.

    B

    The data and structure of the EMPLOYEES table are deleted.

    C

    The data in the EMPLOYEES table is deleted but not the structure.

    D

    You get an error because the statement is not syntactically correct.


    正确答案： C
    解析： 暂无解析

  • 第21题：

    单选题
    You executed the following SQL statement to shrink the EMPLOYEES table segment stored in the EXAMPLE tablespace: ALTER TABLE employees SHRINK SPACE CASCADE; Which statement is correct in this scenario?（）
    A

    The EMPLOYEES table will be changed to read-only mode during the shrink operation.

    B

    The indexes created on the EMPLOYEES table will need to be rebuilt after the shrink operation is over.

    C

    The shrink behavior will be cascaded to all dependent segments of the table that support a shrink operation.

    D

    Data manipulation language (DML) operations will not be possible on the EMPLOYEES table during the COMPACTION phase of the shrink operation.


    正确答案： A
    解析： 暂无解析

  • 第22题：

    多选题
    Which two statements complete a transaction? （）
    A

    DELETE employees;

    B

    DESCRIBE employees;

    C

    ROLLBACK TO SAVE POINT C;

    D

    GRANT SELECT ON employees TO SCOTH

    E

    ALTER TABLE employees SET UNUSED COLUMN sal;

    F

    Select MAX(sal) FROM employees WHERE department _ id 20;


    正确答案： B,F
    解析： 暂无解析

  • 第23题：

    单选题
    You added a PHONE_NUMBER column of NUMBER data type to an existing EMPLOYEES table. The EMPLOYEES table already contains records of 100 employees. Now, you want to enter the phone numbers of each of the 100 employees into the table. Some of the employees may not have a phone number available. Which data manipulation operation do you perform?（）
    A

    MERGE

    B

    INSERT

    C

    UPDATE

    D

    ADD

    E

    ENTER

    F

    You cannot enter the phone numbers for the existing employee records.


    正确答案： D
    解析： 暂无解析

  • 第24题：

    多选题
    Which two operations can be flashed back using the Flashback technology？（）
    A

    DROP USER SMITH；

    B

    DROP TABLE EMPLOYEES；

    C

    DROP TABLESPACE USERS；

    D

    ALTER TABLE SALES_REP DROP PARTITION P1；

    E

    ALTER TABLE EMPLOYEES DROP COLUMN DESIG_ID；


    正确答案： B,C
    解析： 暂无解析

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