DATA CLEANING WITH SQL (pt 3)

 Checking for NULL Values.

it's important we check for NULL values across all tables and columns in our data in other to ensure the validity of our data.

We can check for Null values using the IS NULL tool.

In the video below, we check for the null values in the Property Address field using the query below:



SELECT PropertyAddress
FROM PROJ.dbo.Nash
WHERE PropertyAddress IS NULL

This returns a result that shows that we have 29 rows in the Property Address Field with Null values

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