Which key would you use to join tables?
1Times asked
Apr 2026Last seen
Apr 2026First seen
💡 Model Answer
To join two tables you use a column that exists in both tables and uniquely identifies the relationship. Typically this is a primary key in one table and a foreign key in the other. For example, if you have a Customers table with CustomerID as the primary key and an Orders table with CustomerID as a foreign key, you would join on Customers.CustomerID = Orders.CustomerID.
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