What are SQL joins and subqueries?

Can you explain the difference between SQL joins and subqueries?

Sure! SQL joins combine rows from two or more tables based on a related column, while subqueries are nested queries that provide results for the main query.

Can you give me an example of a SQL join?

Of course! For instance, if you have a 'Customers' table and an 'Orders' table, you can use an INNER JOIN to get all customers with their orders: SELECT Customers.Name, Orders.OrderID FROM Customers INNER JOIN Orders ON Customers.CustomerID = Orders.CustomerID;

What about a subquery example?

A subquery example would be: SELECT Name FROM Customers WHERE CustomerID IN (SELECT CustomerID FROM Orders); This retrieves customers who have placed orders.

When should I use a join instead of a subquery?

Use joins when you need to combine data from multiple tables efficiently. Subqueries are useful for filtering results based on another query.