Union, Minus & Intersect: Databases for Developers #15
The set operators allow you to combine many tables into one. These come in three varieties:
Union
Intersect
Minus
Watch this video to learn how they work. And find out how you can use them to compare the contents of two tables, giving you a report of the differences.
Want more?
https://docs.oracle.com/en/database/o...
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The Magic of SQL with Chris Saxon
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