Question

Using the JOIN...ON keywords to join two tables requires that a condition be specified to indicate how the tables are related.

A. True
B. False

Answer 1

The statement is true; the JOIN...ON clause in SQL requires a condition that specifies the relationship between the two tables being joined, based on a common field or criterion.

Step-by-step explanation:

True. When using the JOIN...ON keywords in SQL to join two tables, a condition must be specified to indicate how the tables are related. This condition, often involving matching column values from both tables, establishes the basis for combining the rows from the joined tables. For example, if we have two tables named Orders and Customers, and both tables have a CustomerID column, we can join them using the following SQL statement:

SELECT Orders.OrderID, Customers.CustomerName
FROM Orders
JOIN Customers ON Orders.CustomerID = Customers.CustomerID;

This SQL query will join the Orders and Customers tables based on the common CustomerID field, thereby relating the customer information with their respective orders.