How to Check for Null or Empty Column in MySQL | 101 Query DBMS | V2V CLASS
In this video, I show you how to filter for a SQL null or empty string. It can be difficult to filter a null because you can't simply compare with an equal sign. You have to use a special IS NULL clause to make the filter work.
I also show you how to combine both the SQL Null and Empty String together in a special trick with the isnull SQL Server function. I use SQL Server to demonstrate the technique.
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