SQL Subqueries: Databases for Developers #11
In SQL you can base queries on the results of other queries.
This video explains the various types of subquery and their uses, covering:
- Inline views
- IN & EXISTS
- Common table expressions/subquery factoring/with clause
- Scalar subqueries
Take the course; Databases for Developers: Next Level https://blogs.oracle.com/academy/take...
Further reading:
About Queries and Subqueries: https://docs.oracle.com/en/database/o...
Using Subqueries: https://docs.oracle.com/en/database/o...
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The Magic of SQL with Chris Saxon
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