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Databases Querying Relational Databases Joining Table Data with SQL JOIN Queries

Gabriel Guerra
Gabriel Guerra
Data Analysis Techdegree Student 3,814 Points

Querying Relational Database error

Hi there

Does anyone know what's wrong with this code snippet: SELECT md.ModelName, ca.VIN, ca.StickerPrice from Model AS md inner join Car AS ca on md.modelid = ca.carid;

Thanks, Gabriel

1 Answer

Steven Parker
Steven Parker
221,323 Points

The JOIN keys should be columns in both tables that contain the same data. Comparing modelid in one table to carid in another won't be likely to return any data.

Hint: look for a column that both tables have in common and join using that.