What is a JOIN condition, and how is it specified?

A JOIN condition specifies the columns that will be used to match rows between two or

more tables. This condition typically uses ON or USING in SQL.

Example:

SELECT *

FROM table1

JOIN table2 ON table1.id = table2.id;

In this example, the condition table1.id = table2.id determines how the rows from

both tables will be joined.