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Databases SQL Basics Finding the Data You Want Filtering by Comparing Values

Posted by Piotr Sochaczewski
Piotr Sochaczewski
13,038 Points

Minor mistake

In a workspace SQL Playground - Filtering By Comparing Values is small logic mistake:

In "Books Before 1900s" is code: SELECT * FROM books where first_published < 1900;

Its look ok, but above is question: -- What are all books released before the 20th century?

So if you wanna keep code the question should be looks like: "-- What are all books released before 1900?

But if you wanna keep the question valid, then code should be changed to: SELECT * FROM books where first_published <= 1900;

Because each century starts form "01" and and on "00" so 20 centry <1901-2000> and 19 centry <1801-1900>.

1 Answer

Marc Rivas
Marc Rivas
15,299 Points

Can confirm