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Please upgrade your browser to improve your experience. If you have worked with SQL for a while — you have most likely had a time where you wanted to show in a query the difference between two dates. It can be for example to calculate how long a person has been hired in your company, how old a person is today, etc.

In this tutorial we are going to look at some ways to do this in Oracle SQL.

Before we dive into some of the different ways to find the differences between two datesI just wanted to let you know that there are many ways to do this. In this tutorial we are going to cover only a few of them. Also, there are different ways to look at things… What I mean is: What if you have two Oracle datesand you wanted to come up with a query that shows the months between them. Would you then show the difference as i.

Or, do you want to show the number of months involved? And, do you want to know i. This seems pretty elementary, but I would suggest that before you actually start using the different Oracle date functionsyou ask yourself exactly what result you would want first.

oracle11g - Calculate business days in Oracle SQL(no functions or procedure) - Stack Overflow

If you do not know up front what your result should be presented, you might end up with some complications later, since some of the arithmetic can be tricky to tweak afterwards. Ok, before we look at the first example I also would like to mention: Remember the time part of your date field, if it has one.

Many times an order date in an order table will have a date with a time on it. Depending on what method you are using to calculate any differences between your two dates, you might end up with the wrong result.

In the example above you see that if we do a TRUNC on a date that has a time part on it, you will only see the date part of your date field. You will then always receive a result that is a whole number…. I am going to discuss this in a later post, but be careful when you use the TRUNC function on dates in your function. Please note that I will be using dates in these samples that do not have a time part set. This is not a method I would recommend, but if you want to calculate months between two days, and you are using Biblical months.

In this example we are going to use the EXTRACT function to find the the month number, and then do a subtraction. The INTERVAL data types were introduced in Oracle 9i. I am NOT going to go into the detailed usage of this data type, but just know that you can set i.

The default is 2. I have to admit that I have actually never used the INTERVAL data types, and to be honest there is a logic with this data type that I am not sure if I totally understand…or have thought through yet….

What if we change the end date to i. You will then see that it make money with high alch shows an extra month. If you have any explanation of this, your contribution is welcomed.

As you have seen, using Oracle date arithmetic, there are many ways to get your result. In this tutorial I have shown some of them, and if you have any additions to the examples TJ Abrahamsen is the founder and author of OracleCoder. He has worked with Oracle since He loves teaching others, and like to share his thoughts, ideas, and experience on his blog.

You may directly put in select clause following number 1 best way to make money in runescape 2016 p2p Thank you for your input.

This is basically what is used in the three first examples. TJ I am struggling with the script below, Calculate working days between two dates oracle sql falcon stock trading computers familiar with SQL but I need to convert this script to Oracle.

Thank you for your comment. But, a few pointers: Maybe you should look owning a gym make money using a WITH statement in Oracle Calculate working days between two dates oracle sql Then you can actually reduce your numbers of requests to the database drastically.

As you can see in my tutorial, I describe the use of EXTRACT. Thanks for your Hint, however the script work ok but the maingear shift super stock specs function I am not sure if this is correct as the script running to bring data from this month as This Month and previous month as One month ago and previouse and so on.

Ask TOM "Counting the number of business days between 2 dat"

Home Tutorials Articles Blog Community Activity Forums Members My Community Members Log In Register Courses Menu. Log In Remember Me. Home Tutorials Date Manipulation How To Calculate Difference Between Dates in Oracle SQL. February 26, In: Date ManipulationFunctionsSQLTutorials 16 Comments.

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TJ Abrahamsen TJ Abrahamsen is the founder and author of OracleCoder.

oracle - SQL to return the number of working days between 2 passed in dates - Stack Overflow

How to update Multiple Columns in Oracle April 17, Hello Singh — Thank you for your input. Hey there Tebogo — I am glad I could help. Thank you for sharing. Hi heiba — Thank you for your comment. Hope this helps a bit. Hi Tom, Thanks for your Hint, however the script work ok but the extract function I am not sure if this is correct as the script running to bring data from this month as This Month and previous month as One month ago and previouse and so on.

Thank you for your contribution. A really simple way to get the number of years between two dates: HOW TO DISPLAY THE DAY OF YOUR DATE OF BIRTH. Hi there — You can try this: Three Ways To Transpose Rows Into Columns in Oracle SQL February 26, How To Calculate Difference Between Dates in Oracle SQL February 26, How To Transpose Columns To Rows In Oracle March 12, How To Use Analytic Functions in Oracle SQL February 26, Formatting SQL — Best Practices April 30, How long will my SQL query run February 26, This worked for me.

Sayed Mohammad on 22 Feb in: How to update Multiple Columns in Oracle YOU FORGOT TO ADD WHERE EXISTS SELECT 1 FROM oe. Three Ways To Transpose Rows Into Columns in Oracle SQL Thank you for your feedback.

I am happy that it helped you.

Three Ways To Transpose Rows Into Columns in Oracle SQL Fantastic Article. I was almost suggesting IT team to upgrade to Oracl Rajaan on 12 Nov in: Three Ways To Transpose Rows Into Columns in Oracle SQL Hello, Base table looks like below SID NAME VALUE OracleCoderCom 2 years ago Follow.