Complete SAS Programming Guide - Learn SAS and Become a Data Ninja - Substr Function

The video tutorial explains the substring function, focusing on its syntax and arguments: source, position, and number of characters to read. It demonstrates how to extract specific data from a date variable using the substring function. The tutorial also covers the left side application of substring, showing how to modify parts of a string, such as changing a year in a date. The video aims to make the concept clear and easy to understand through examples.

What is the first argument in the substring function and what does it represent?

Explain the significance of the 'position' argument in the substring function.

How does the substring function determine how many characters to read?

What changes were made to the date variable in the left side application example?

Describe the left side application of the substring function and when it is typically used.