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Databases Querying Relational Databases Joining Table Data with SQL JOIN Queries

Posted by Gabriel Guerra
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Gabriel Guerra
Data Analysis Techdegree Graduate 9,109 Points

Car data base query

Hi there Why was this code not accepted for Challenge number 5:

https://teamtreehouse.com/library/querying-relational-databases/joining-table-data-with-sql/join-queries select Sale.SaleDate, Sale.SaleAmount, SalesRep.FirstName, SalesRep.LastName from SalesRep left outer join Sale on SalesRep.SalesRepID = Sale.SalesRepID;

Thanks, Gabriel

2 Answers

Steven Parker
Steven Parker
231,268 Points
Steven Parker
Steven Parker
231,268 Points

Since the instructions say to "Make sure that all Sales appear in results even if there is no SalesRep associated to the sale", then you'll want to make sure that the Sale table is named first (so it is the "left side") on the left outer join.

Doing it the other way assures that al Sales Reps are returned even if they have no sales, but that's not what the challenge is looking for.

Gabriel Guerra
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.a{fill-rule:evenodd;}techdegree seal-36
Gabriel Guerra
Data Analysis Techdegree Graduate 9,109 Points
Gabriel Guerra
.a{fill-rule:evenodd;}techdegree seal-36
Gabriel Guerra
Data Analysis Techdegree Graduate 9,109 Points

Thank you so much!