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Databases Querying Relational Databases Subqueries Using IN with Subqueries to Filter Data

Nate Baker
Nate Baker
17,247 Points
Posted by Nate Baker
Nate Baker
17,247 Points

How is a subquery different than a WHERE clause?

In the video's example, we want to know all cars with the ModelYear of 2015. So, a second query is written and then placed as a subquery.

How does this differ from just having a clause: WHERE ModelYear = 2015?

Nate Baker
Nate Baker
17,247 Points
Nate Baker
Nate Baker
17,247 Points

Dave, you're right. The subquery is obtaining information from a different table. I failed to see that at the beginning.

1 Answer

Dave StSomeWhere
Dave StSomeWhere
19,870 Points
Dave StSomeWhere
Dave StSomeWhere
19,870 Points

Is the ModelYear column in the same table as the FROM clause?

Could you please show the two queries so we can discuss the differences.