Studying for 1Z0-051, months_between issue

Question

Hi guys I'm working through SQL Fundamentals I Exam Guide and exercise 4-3 runs this query:
SELECT EMPLOYEE_ID, LAST_NAME, HIRE_DATE
FROM EMPLOYEES
WHERE MONTHS_BETWEEN('01-JAN-2000',HIRE_DATE)>100;
Looking at my sample HR schema the earliest hire_date is 2001 so the results come back with nothing. However if I change the date to '01-JAN-1960' I still get nothing, is there a problem with the query?
Many thanks
Mike

Answer 1

837287 wrote:
Hi guys I'm working through SQL Fundamentals I Exam Guide and exercise 4-3 runs this query:
SELECT EMPLOYEE_ID, LAST_NAME, HIRE_DATE
FROM EMPLOYEES
WHERE MONTHS_BETWEEN('01-JAN-2000',HIRE_DATE)>100;
Looking at my sample HR schema the earliest hire_date is 2001 so the results come back with nothing. However if I change the date to '01-JAN-1960' I still get nothing, is there a problem with the query?
Many thanks
MikeIMHO it is inappropriate to ask about individual topics in this forum. IMHO It is better asked in the SQL forum. This forums is more about the infrastructure, processes and procedures of Oracle Certification.
There are a couple of reasons for this. One is that discussion can lead toward exam questions being published. I have seen this happen on a number of occasions, sometimes the orignal is no really a problem ... then braindump extracts and copyright breach material is posted in the same or another thread.
The other reason is that there are a really wide spread of oracle certifications, the 1z0-051 may well be one of hte most common certiifcation exams, but it is one of perhaps about a hundred or so certification exams offered.
Also worth a check is : http://www.mhprofessional.com/product.php?isbn=0071597867
NB: Having said that my bucket and shovel approach is when working with these things is not to rely on an implicit character to date conversion but to ensure I am using an explicit character to date conversion and see what happens with that.