Which SELECT statement should you use to extract the year from the system date and display it in the format "1998"?（）A、SELECT TO_CHAR(SYSDATE,'yyyy') FROM dual;B、SELECT TO_DATE(SYSDATE,'yyyy') FROM dual;C、SELECT DECODE(SUBSTR(SYSDATE, 8), 'YYYY') FROM dual;D、SELECT DECODE(SUBSTR(SYSDATE, 8), 'year') FROM dual;E、SELECT TO_CHAR(SUBSTR(SYSDATE, 8,2),'yyyy') FROM dual;
Which SELECT statement should you use to extract the year from the system date and display it in the format "1998"?（）
- A、SELECT TO_CHAR(SYSDATE,'yyyy') FROM dual;
- B、SELECT TO_DATE(SYSDATE,'yyyy') FROM dual;
- C、SELECT DECODE(SUBSTR(SYSDATE, 8), 'YYYY') FROM dual;
- D、SELECT DECODE(SUBSTR(SYSDATE, 8), 'year') FROM dual;
- E、SELECT TO_CHAR(SUBSTR(SYSDATE, 8,2),'yyyy') FROM dual;
相关考题：
The EMP table has these columns:ENAME VARCHAR2(35)SALARY NUMBER(8,2)HIRE_DATE DATEManagement wants a list of names of employees who have been with the company for more than five years. Which SQL statement displays the required results? （）A. SELECT ENAME FROM EMP WHERE SYSDATE-HIRE_DATE 5;B. SELECT ENAME FROM EMP WHERE HIRE_DATE-SYSDATE 5;C. SELECT ENAME FROM EMP WHERE (SYSDATE_HIRE_DATE)/365 5;D. SELECT ENAME FROM EMP WHERE (SYSDATE_HIRE_DATE)*/365 5;
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The EMP table has these columns: ENAME VARCHAR2(35) SALARY NUMBER(8,2) HIRE_DATE DATE Management wants a list of names of employees who have been with the company for more than five years. Which SQL statement displays the required results? （）A、SELECT ENAME FROM EMP WHERE SYSDATE-HIRE_DATE 5;B、SELECT ENAME FROM EMP WHERE HIRE_DATE-SYSDATE 5;C、SELECT ENAME FROM EMP WHERE (SYSDATE_HIRE_DATE)/365 5;D、SELECT ENAME FROM EMP WHERE (SYSDATE_HIRE_DATE)*/365 5;
Which SQL statement displays the date March 19, 2001 in a format that appears as "Nineteenth of March 2001 12:00:00 AM"?（）A、SELECT TO_CHAR(TO_DATE('19-Mar-2001', 'DD-Mon-YYYY'), 'fmDdspth "of" Month YYYY fmHH:MI:SS AM') NEW_DATE FROM dual;B、SELECT TO_CHAR(TO_DATE('19-Mar-2001', 'DD-Mon-YYYY'), 'Ddspth "of" Month YYYY fmHH:MI:SS AM') NEW_DATE FROM dual;C、SELECT TO_CHAR(TO_DATE('19-Mar-2001', 'DD-Mon-YYYY'), 'fmDdspth "of" Month YYYY HH:MI:SS AM') NEW_DATE FROM dual;D、SELECT TO_CHAR(TO_DATE('19-Mar-2001', 'DD-Mon-YYYY'), 'fmtDdspth "of" Month YYYY fmtHH:MI:SS AM') NEW_DATE FROM dual;
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多选题Which three SELECT statements display 2000 in the format "$2,000.00"? （）ASELECT TO_CHAR(2000, '$#,###.##') FROM dual;BSELECT TO_CHAR(2000, '$0,000.00') FROM dual;CSELECT TO_CHAR(2000, '$9,999.00') FROM dual;DSELECT TO_CHAR(2000, '$9,999.99') FROM dual;ESELECT TO_CHAR(2000, '$2,000.00') FROM dual;FSELECT TO_CHAR(2000, '$N,NNN.NN') FROM dual;
单选题Which SELECT statement should you use to extract the year from the system date and display it in the format "1998"?（）ASELECT TO_CHAR(SYSDATE,'yyyy') FROM dual;BSELECT TO_DATE(SYSDATE,'yyyy') FROM dual;CSELECT DECODE(SUBSTR(SYSDATE, 8), 'YYYY') FROM dual;DSELECT DECODE(SUBSTR(SYSDATE, 8), 'year') FROM dual;ESELECT TO_CHAR(SUBSTR(SYSDATE, 8,2),'yyyy') FROM dual;
单选题Which SELECT statement will the result ‘ello World’ from the string ‘Hello World’?（）ASELECT SUBSTR( ‘Hello World’,1) FROM dual;BSELECT INITCAP(TRIM (‘Hello World’, 1,1)) FROM dual;CSELECT LOWER(SUBSTR(‘Hello World’, 1, 1) FROM dual;DSELECT LOWER(SUBSTR(‘Hello World’, 2, 1) FROM dual;ESELECT LOWER(TRIM (‘H’ FROM ‘Hello World’)) FROM dual;
单选题变量v_time=’23-MAY-00’， 如下那条语句返回值为’01-JAN-00’？（）Aselect round（v_time，’DAY’） from dualBselect round（v_time，’YEAR’） from dualCselect round（v_time，’MONTH’） from dualDA select round（to_char（v_time，’yyyy’）） from dual
单选题You would like to display the system date in the format "Monday, 01 June, 2001".Which SELECT statement should you use?（）ASELECT TO_DATE(SYSDATE, 'FMDAY, DD Month, YYYY') FROM dual;BSELECT TO_CHAR(SYSDATE, 'FMDD, DY Month, 'YYYY') FROM dual;CSELECT TO_CHAR(SYSDATE, 'FMDay, DD Month, YYYY') FROM dual;DSELECT TO_CHAR(SYSDATE, 'FMDY, DDD Month, YYYY') FROM dual;ESELECT TO_DATE(SYSDATE, 'FMDY, DDD Month, YYYY') FROM dual;
单选题Which SQL statement displays the date March 19, 2001 in a format that appears as "Nineteenth of March 2001 12:00:00 AM"?（）ASELECT TO_CHAR(TO_DATE('19-Mar-2001', 'DD-Mon-YYYY'), 'fmDdspth of Month YYYY fmHH:MI:SS AM') NEW_DATE FROM dual;BSELECT TO_CHAR(TO_DATE('19-Mar-2001', 'DD-Mon-YYYY'), 'Ddspth of Month YYYY fmHH:MI:SS AM') NEW_DATE FROM dual;CSELECT TO_CHAR(TO_DATE('19-Mar-2001', 'DD-Mon-YYYY'), 'fmDdspth of Month YYYY HH:MI:SS AM') NEW_DATE FROM dual;DSELECT TO_CHAR(TO_DATE('19-Mar-2001', 'DD-Mon-YYYY'), 'fmtDdspth of Month YYYY fmtHH:MI:SS AM') NEW_DATE FROM dual;
单选题查询出当前的数据库系统时间，精确到秒（）Aselect to_date(sysdate,'YYYY-MM-DD HH24:MI:SS') from dual;Bselect to_char(sysdate,'YYYY-MM-DD HH24:MI:SS') from dual;Cselect date(sysdate,'YYYY-MM-DD HH24:MI:SS') from dual;Dselect chr(sysdate,'YYYY-MM-DD HH24:MI:SS') from dual;