Beginning Web Development, Silverlight, and ASP.NET AJAX

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CHAPTER 5 ■ ASP.NET WEB SERVICES
You can manually type your SQL on this page (or cut and paste an existing known
query), or you can use the Query Builder. Click the Query Builder button, and this builder
will launch (see Figure 5-9).
Figure 5-9. The Query Builder
The Query Builder dialog box enables you to visually create your query. First, select
the tables that you want to add to your query and the links that join them. In this case, a
single table, Person.Address, is used.
To pick the fields that you want in your query, simply check the boxes beside the field
names in the top pane. Then, in the center pane, you can specify a parameter by using
the Filter column. So, if you want to filter the returned data based on a parameterized
postal code, you can place a filter called @ZIP on the PostalCode field. This embeds a