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Tera-Tom Genius Series - Kognitio Architecture and SQL by Leona Coffing, Tom Coffing

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Chapter 10 – Sub-query Functions

"I went to a restaurant that serves 'breakfast any time.' So I ordered French toast during the Renaissance."

- Steven Wright

An IN List is much like a Subquery

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This query is very simple and easy to understand. It uses an IN List to find all Employees who are in Dept_No 100 or Dept_No 200.

An IN List Never has Duplicates – Just like a Subquery

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What is going on with this IN List? Why in the world are their duplicates in there? Will this query even work? What will the result set look like? Turn the page!

An IN List ...

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