Complete SAS Programming Guide - Learn SAS and Become a Data Ninja - How to Perform a Full Join

The video tutorial explains the limitations of using a full join in SQL, highlighting how it can lead to data loss similar to a right join. It introduces the coalesce function as a solution to this problem, allowing for the combination of data from different tables even when column names differ. The tutorial covers the structure of tables, the use of aliases, and provides a practical example of using coalesce in select statements to ensure all data is retained. The video concludes with a demonstration of how coalesce can effectively handle missing data.

What happens when the coalesce function does not find a value in the first table?

Describe the process of how the coalesce function retrieves values from multiple tables.

What is the final outcome when combining a full join with the coalesce function?