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Development Tools Database Foundations SQL Calculating, Aggregating and Other Functions Grouping, Joining and Cleaning Up

Sean Flanagan
Sean Flanagan
33,235 Points
Posted by Sean Flanagan
Sean Flanagan
33,235 Points

IFNULL

Hi. I'm at 4 minutes 14 seconds in the video. I've tried to run the syntax below but got an error:

SELECT title, MIN(score) AS minimum_score, 
MAX(score) AS maximum_score, 
IFNULL(AVG(score).0) AS average 
FROM movies LEFT OUTER JOIN reviews 
ON movies.id = reviews.movie_id 
GROUP BY movie_id;

As far as I'm aware, this is the same as Andrew's, so I don't understand why it works for him but not for me.

I'd appreciate any help.

Sean Flanagan
Sean Flanagan
33,235 Points
Sean Flanagan
Sean Flanagan
33,235 Points

@Corey: Hi Corey. Thanks for clarifying this and sorry for the delay. When I looked at the video, it looked like a dot especially as I couldn't see a space between it and the 0. It was so small.

I would up vote your answer and give you Best Answer but neither option shows up here. Thank you. :-)

2 Answers

Corey Carter
Corey Carter
21,593 Points

You should have a comma instead of a period in your ' IFNULL(AVE(score).0) ' .... statement. It should be 

IFNULL(AVG(score), 0)