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Posted by Andrew Gould on 20 August 2012
The idea of a subquery is pretty simple: it's just one query nested inside another. If that doesn't sound particularly useful then you should watch this video to find out why it is! You'll learn how to place a subquery in a SELECT list or a WHERE clause, how to add criteria to a subquery, and how to handle subqueries which return multiple values.
See our full range of SQL training resources, or test your knowledge of SQL with one of our SQL skills assessment tests.
This video has the following accompanying files:
File name | Type | Description |
---|---|---|
Create Movies Database with Genre Table.sql | SQL query | |
GenerateMoviesDatabase.sql | SQL query | |
GenerateUpdatedMoviesDatabase.sql | SQL query |
Click to download a zipped copy of the above files.
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