Question

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

A) CONNECT
B) MERGE
C) LINK
D) ON

Answer 1

The correct answer to fill in the blank is D) ON. This keyword is used in SQL JOIN statements to specify the condition that relates two tables.

Step-by-step explanation:

When joining two tables using the JOIN statement in SQL, the ON keyword is used to specify the condition that indicates how the tables are related. This is a crucial part of writing a join clause because it defines the relationship between columns in the tables being joined, ensuring that the correct data is combined from each table. For example, if you have a 'customers' table related to an 'orders' table through a 'customer_id' field, your join condition would use the ON keyword like so: JOIN orders ON customers.customer_id = orders.customer_id.