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Databases Querying Relational Databases Subqueries Subqueries

Taylor Han
Taylor Han
2,406 Points
Posted by Taylor Han
Taylor Han
2,406 Points

Subquery with SQL (Task 1)

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

What I tried:

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

Really stuck on these, I think I just need to see what the correct syntax looks like. Thank you!

2 Answers

Steven Parker
Steven Parker
231,248 Points
Steven Parker
Steven Parker
231,248 Points

You've got the right idea, but:

  • the query only asks you to select the ModelName (not everything)
  • the Car table doesn't have a ModelName field

The common field both tables have is ModelID, try that for the WHERE and subquery.

Taylor Han
Taylor Han
2,406 Points
Taylor Han
Taylor Han
2,406 Points

I made those fixes, thanks!

Colton Shaw
Colton Shaw
12,634 Points
Colton Shaw
Colton Shaw
12,634 Points

Not sure why this was so difficult. I was trying to inner join them and have both the model name and sticker prices listed.

A working solution is

select ModelName from Model WHERE ModelID IN (Select ModelID from Car where StickerPrice > 30000)