The Oracle NVL function allows you to check a value and return a different value if that value is NULL.
It’s great for using another value if the first one is NULL or an optional value, for example people’s phone numbers.
It’s also good alongside aggregate functions and grouping so you can see what the difference is between a subtotal row and an actual NULL value.
The syntax of the Oracle NVL function is:
NVL( check_value, replace_value )
The parameters are:
- check_value (mandatory): This is the value that is displayed to the user. It is also the value that is checked for NULL.
- replace_value (mandatory): This is the value that appears if the check_value is NULL.
The function can use many different data types as parameters: string, date, or numeric. However, both parameters need to be the same type.
For more information about the Oracle NVL function, including all of the SQL shown in this video and the examples, read the related article here:
Learning how to draw cartoon animals from the farm is not such a difficult task! Weve grown up surrounded by them! Farm animals are everywhere: In blockbuster movies, childs books, greeting cards. their shapes and images are printed in our minds!
In this section, I will show you how to determine what are the physical uniqueness of each animal and how to work with them. Then, you can practice drawing each cartoon character using basic shapes.
You will have the opportunity to make nice illustrations, practice sketching and cartooning using short easy lessons and complete your creation using a drawing software to create vector art if you want to! Cartoon drawing is really fun once you get into it!
Dont be afraid to try until you get it right. This method is really simple, but requires practice and observation. So, sit back and relax. Learn how to draw animals from the farm and start your journey on a good note!
Lets try s few basic characters to get started! :)
A cute turkey to begin with.
In this first tutorial, you can learn how to draw a fun turkey mostly made from small rectangles and large circular shapes. The posture of the character is really interesting. Not only is it easier to draw than a front version, but its also easier to add some perspective (as we can see with the legs). The fact that we just need to draw one wing is also interesting.
Most of these cartoon animals are not filled with complex textures or digital effects. In this case, the subject is filled with plain colors and only a few basic details (inside the tail) were added.
A nice turtle also from a side view.