Think ISNULL and COALESCE are the same in SQL? Most developers do. But they are not.
In this video, I explain the real difference between ISNULL and COALESCE with practical examples that can impact your reports, calculations, and query results. We will cover data type behavior, string truncation scenarios, multiple arguments support, and when to use each function in real projects.
If you use SQL Server, this is one small concept that can save you from big production issues.
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#sql #dataengineer #null
