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Databases Reporting with SQL Aggregate and Numeric Functions Review: Aggregate and Numeric Functions

Lolo Handricks
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Lolo Handricks
Front End Web Development Techdegree Student 10,706 Points
Posted by Lolo Handricks
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Lolo Handricks
Front End Web Development Techdegree Student 10,706 Points

I think this question is being marked incorrectly.

I think this question is being marked incorrectly. SELECT COUNT(platform) FROM games; Should return 4, as the keyword DISTINCT isn't used. However, it's saying this is the incorrect answer. Could you please check?

1 Answer

Jason Anello
Jason Anello
Courses Plus Student 94,610 Points

Hi Lolo,

Without the DISTINCT keyword it will count all non-null values. In this case, out of the 4 rows, 2 of them have null values in the platform column. So there are 2 non-null values.