Oracle Certification Interview Question:

You need to calculate the number of days from 1st Jan 2007 till date:
Dates are stored in the default format of dd-mm-rr.
Which two SQL statements would give the required output? (Choose two.)
A. SELECT SYSDATE - 01-JAN-2007 FROM DUAL
B. SELECT SYSDATE - TO_DATE(01/JANUARY/2007) FROM DUAL;
C. SELECT SYSDATE - TO_DATE(01-JANUARY-2007) FROM DUAL;
D. SELECT TO_CHAR(SYSDATE,DD-MON-YYYY)-01-JAN-2007 FROM DUAL;
E. SELECT TO_DATE(SYSDATE,DD/MONTH/YYYY)-01/JANUARY/2007 FROM DUAL;

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B. SELECT SYSDATE - TO_DATE('01/JANUARY/2007') FROM DUAL;
C. SELECT SYSDATE - TO_DATE('01-JANUARY-2007) FROM DUAL;
Submitted by: Administrator