How to write SQL queries: Databases for Developers #4

You query a database table with a select statement. But unless you provide a where clause, this will return you all the rows!

That's a lot for you to sift through if your table has millions, billions or trillions of rows. In this episode Chris discusses common conditions for filtering rows so the database only returns what you need.

Further reading:

Oracle Database 12.2 select syntax: http://docs.oracle.com/database/122/SQLRF/SELECT.htm#SQLRF01702
Oracle Database Concepts Guide on Select: http://docs.oracle.com/database/122/CNCPT/sql.htm#GUID-702909E1-B214-4D30-A0F9-5A4335C2BA4A

Take the Databases for Developers FREE SQL course at https://devgym.oracle.com/pls/apex/dg/class/databases-for-developers-foundations.html

Daily SQL tips on Twitter: https://twitter.com/SQLDaily
Chris on Twitter: https://twitter.com/ChrisRSaxon
All Things SQL Blog: https://blogs.oracle.com/sql

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The Magic of SQL with Chris Saxon

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