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Sipann A.
Sipann A.
30,234 Points

SQL - Querying Relational databases - Challenge Task #3

Hello, I get a "Bummer! Your query didn't select the FirstName, LastName and SaleAmount!" on this question. My code is:

SELECT SalesRep.FirstName, SalesRep.LastName, SUM(Sale.SaleAmount) 
FROM SalesRep 
INNER JOIN Sale ON SalesRep.SalesRepId = Sale.SalesRepId 
GROUP BY SalesRep.LastName;

As I do not have access to the database "behind", I can't check by myself but this code provides with a return set: Indira Gupta 215350.00 Jordan Jackson 128400.00 Mike Jones 211200.00 ...

I have tried joining FirstName and LastName in one column to group them by full name, but does not seem to be what I'm expected to do either. What am I missing? Thanks for any help provided!

can you paste the link to the challenge ... I think I see the problem


you need to group by the item(s) you are aggregating on.

2 Answers

Sipann A.
Sipann A.
30,234 Points

@markmneimneh Thanks for your answer. Yes, I grouped only by LastName not to overweight my code on this request. However, when aliasing FirstName and LastName as full_name and grouping them by full_name, I can see that no SalesRep share the same LastName. I guess it is not an issue here. I've tried your solution anyway (I assumed you meant: "try GROUP BY SalesRep.LastName, SalesRep.FirstName;" rather than "try GROUP BY SalesRep.LastName, SalesRep.LastName;"). I also corrected the name of the columns "SalesRepID" vs "SalesRepId" ... but nothing changes...

Sipann A.
Sipann A.
30,234 Points

Just in case anyone gets stuck like I did... Forget about grouping and summing results for this query. Not part of what's expected. Thanks markmneimneh for your support!

Thank you Sipann!