Generally speaking, developers hate nulls. While an integral part of relational database theory (where they represent an unknown value), eventually nulls get passed to some variable that won’t accept ...

between inner and outer JOINs, and then the implications of NULLs on our queries. In order to examine the difference between inner and outer JOINs, we’ll need some sample data.

when NULLs appear in the data of a subquery. Scott Stephens worked for Oracle for more than 13 years in technical support, e-commerce, marketing, and software development.

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