6.3 Joining Tables

When you append tables, you match columns. But often, instead of matching columns, you need to match rows. For example, a teacher might record grades from homework in one table and grades from tests in another. To compute final grades she would need to match the homework and test scores for each student. This is called joining tables, and you do it with a query.

In the preceding section, two tables were appended to create one table containing all the data about flights. Now the data for each tour can be joined with the matching data for flights. To open the Query Builder, click a data icon in the Project Tree or Process Flow, and select Tasks Data Query Builder from the menu bar.