02. Video: Introduction to NULLs
NULLs
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NULLs are a datatype that specifies where no data exists in SQL. They are often ignored in our aggregation functions, which you will get a first look at in the next concept using COUNT.
NULLs
NULLs are a datatype that specifies where no data exists in SQL. They are often ignored in our aggregation functions, which you will get a first look at in the next concept using COUNT.