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Joel McCracken Jr
3,142 PointsRelational Database Challenge Task 2 of 5: Bummer ambiguous column name Car.VIN
SELECT Make.MakeName, Model.ModelName, Car.VIN, Car.StickerPrice FROM Make INNER JOIN Model On Make.MakeID = Model.MakeID INNER JOIN Car ON Model.ModelID = Car.ModelID
Joel McCracken Jr
3,142 PointsBummer! SQL Error: ambiguous column name: Car.VIN
SELECT MakeName, ModelName, Car.VIN, StickerPrice FROM Make, Car INNER JOIN Model On Make.MakeID = Model.MakeID INNER JOIN Car ON Model.ModelID = Car.ModelID
SQL Error: ambiguous column name: Car.VIN
Sebastian Barbiero
6,529 PointsYour code you are putting into the system and the code you have in the forum are two different things.
The code you posted in your initial question is correct.
The code you posted 6 minutes ago has a lot of errors.
First off you do not ID what table each column is coming from in your SELECT statement. That is your biggest issue. MakeName should be Make.MakeName like you have in your question post.
Also "FROM Make, Car INNER JOIN...." is incorrect. You start with selecting one table not two and then join each table after.
Using your code from your original post, without touching the meat of it and only the formatting, it should work.
SELECT Make.MakeName, Model.ModelName, Car.VIN, Car.StickerPrice FROM Make
INNER JOIN Model ON Make.MakeID = Model.MakeID
INNER JOIN Car ON Model.ModelID = Car.ModelID
If that doesn't work I have another suggestion for you.
Joel McCracken Jr
3,142 PointsSebastian Barbiero I was trying to see if I would get "Ambiguous" on other statements, but it still only cared about Car.VIN... I am still not sure why..
Your response worked.
SELECT Make.MakeName, Model.ModelName, Car.VIN, Car.StickerPrice FROM Make INNER JOIN Model ON Make.MakeID = Model.MakeID INNER JOIN Car ON Model.ModelID = Car.ModelID
Sebastian Barbiero
6,529 PointsI'm not sure I understand your question.
Glad the code worked.
Joel McCracken Jr
3,142 PointsI was trying to break the query to give another warning... to sanity check.. but was still getting the same warning.
(I am a QA Analyst {Manual Tester} [6 months into the field, coming form 7 years as IT tech support], and am trying to widen my tool set. Thanks for your help. This community is awesome)
3 Answers
Steven Parker
231,248 PointsCode Challenges are not the best place to test SQL error responses.
The challenge uses a mixture of ways to test your responses and does not rely solely on the SQL engine to generate the messages it shows you.
If you really want to experiment with SQL error responses, use the playground. Or even better, use an actual installed instance of the SQL server that you will be using or actual projects.
Joel McCracken Jr
3,142 PointsI wasn't initially trying to "test". I resorted to that when the internet failed me, and I couldn't see why my request was failing.
ace punzalan
4,081 PointsSELECT Make.MakeName, Model.ModelName, Car.VIN, Car.StickerPrice FROM Make INNER JOIN Model ON Make.MakeID = Model.MakeID INNER JOIN Car ON Model.ModelID = Car.ModelID;
Teacher Russell
16,873 PointsWhy does the challenge ask us to return from the model and car table specifically, when we can't?
Steven Parker
231,248 PointsYou should always start a fresh question instead of asking one as an "answer" to an old question to have the best chance of being seen by more students.
But I'm sure it is possible to complete the challenges. If you're having trouble with one, post your query code and a link to the course page in an new question.
Kevin Gates
15,053 PointsHere's an answer, utilizing what was taught recently, including giving an alias to the longer table names:
SELECT mk.MakeName, md.ModelName, c.VIN, C.StickerPrice
FROM Make AS mk
INNER JOIN Model AS md
ON mk.MakeID = md.MakeID
INNER JOIN Car AS c
ON md.ModelID = c.ModelID;
Joel McCracken Jr
3,142 PointsJoel McCracken Jr
3,142 PointsIt is as if there are two columns named VIN... though the "challenge" only states one...
In a car database there is a Make table with columns, MakeID and MakeName, a Model table with columns, ModelID, MakeID and ModelName and a Car table with columns, CarID, ModelID, VIN, ModelYear and StickerPrice. For all cars in the database, show Make Name, Model Name, VIN and Sticker Price from the Model and Car tables in one result set.