I have a table containing following Columns plus other columns:
Start Date 04-01-2002(mm-dd-yyyy) varchar(10) Start Time column 09:30:30(hh:mm:ss) varchar(8) End Date 04-05-2002(mm-dd-yyyy) varchar(10) End Time column 09:45:30(hh:mm:ss) varchar(8)1. We want to create a view for report users, so that they could just select the other columns and difference in start Date/time to End Date/Time.
2. The difference in time should be based on business day. i.e. Saturday & Sunday should be excluded.
3. Each business day is defined as 8:00 AM to 5:00 PM (1 business day = 9 hrs)
4. The time is stored as a 24-hour clock.
Start Date Start Time End Date End Time Desired Output 04/01/2002 10:00:00 04/01/2002 3:30:00 0 Days 5:30 Hrs 04/01/2002 16:00:00 04/02/2002 10:45:00 0 Days 3:45 Hrs 04/01/2002 09:00:00 04/03/2002 10:45:00 2 Days 1:45 Hrs 04/05/2002 16:30:00 04/08/2002 9:45:00 0 Days 2:15 Hrs* *In last case as 04/06/2002 & 04/07/2002 were Saturday & Sunday, hence excluded. So the difference of time is just 2:15 hrs.Can you please give me a suggestion/pseudo code/logic on how I might do this? We cannot use cursors as we want to make a view.
This type of arithmetic isn't going to work very easy since you are not using Oracle's native DATE datatype. If you used one column of the DATE datatype to denote the starting time and date, and another column to denote the ending date and time, then you could just subtract the two values and it would tell you the difference! The DATE datatype makes this really easy.
The next trick is to then figure out how many weekends are in that date range and subtract 2 days for the weekend. The DECODE function can be used in your query to perform if/then analysis and return different results.
For More Information
- What do you think about this answer? E-mail the editors at editor@searchDatabase.com with your feedback.
- The Best Oracle Web Links: tips, tutorials, scripts, and more.
- Have an Oracle or SQL tip to offer your fellow DBAs and developers? The best tips submitted will receive a cool prize. Submit your tip today!
- Ask your technical Oracle and SQL questions -- or help out your peers by answering them -- in our live discussion forums.
- Ask the Experts yourself: Our SQL, database design, Oracle, SQL Server, DB2, metadata, object-oriented and data warehousing gurus are waiting to answer your toughest questions.
Dig Deeper on Oracle database design and architecture
Have a question for an expert?
Please add a title for your question
Get answers from a TechTarget expert on whatever's puzzling you.