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Databases Querying Relational Databases Subqueries Subqueries

Sam Speaks
Sam Speaks
6,013 Points

What is this supposedly outputting? (Subqueries)

The question asks for the Make Name, but the error at the end says something about not outputting all of the Make ID's.

I have tried both starting with SELECT MakeID and SELECT ModelID.

Is there something i'm obviously missing here?

Challenge Task 1 of 4 In a car database there is a Model table with columns, ModelID, MakeID and ModelName and a Car table with columns, CarID, ModelID, VIN, ModelYear and StickerPrice.

Use a subquery along with IN to list all the Model Names with a Sticker Price greater than $30000

SELECT ModelID FROM Model WHERE StickerPrice IN (SELECT * FROM Car WHERE StickerPrice > 30000);

1 Answer

Steven Parker
Steven Parker
221,323 Points

There are a few issues:

  • the instructions ask for Model Names but ModelID is being selected
  • the (main) filter condition uses StickerPrice but that column does not exist in the Model table
  • the subquery should select only the column being compared by the WHERE...IN clause
  • the main filter should use a column that is common to both tables