Master SQL for Data Analysis - Distinct Values (DISTINCT)

The video tutorial explains how to use the SQL SELECT DISTINCT statement to find unique values in data columns. It covers the basic syntax, handling null values, and using DISTINCT with multiple columns. Additionally, it demonstrates combining DISTINCT with aggregation functions like COUNT to analyze data effectively.

What condition can be added to a query to filter out null values?

Explain how the combination of COUNT and DISTINCT is used in SQL.