[jmull3n]

You don't directly query your database from GraphQL. Similar to REST, you read the parameters from the request and build your database query using the object–relational mapping library of your choice. A popular one at the moment for Node is Prisma.

[cs-szazz]

But in this imaginary situation, there's no efficient way to query the database without adding an index, and the suggestion is it's harder to know what your clients will call versus REST because one is statically defined while the other is more freeform.

[diveanon]

This problem is solved at the db layer. If your data is not queryable in an efficient manner from the DB then it doesn't really matter if you use REST or GQL.