Chapter 8: Selecting Data with Queries
IN THIS CHAPTER
Understanding what queries are and what they can do for you
Specifying the fields in a query
Displaying a query's results
Adding and removing fields from a query's design
Sorting a query's results
Filtering records returned by a query
Printing records returned by a query
Saving a query
Including more than one table in a query
Adding, deleting, and moving tables in a query
Joining tables in a query's design
Understanding the options for joining tables in a query
Queries are an essential part of any database application. Queries are the tools that enable you and your users to extract data from multiple tables, combine it in useful ways, and present it to the user as a datasheet, on a form, or as a printed report.
You may have heard the old cliché, “Queries convert data to information.” To a certain extent, this statement is true — that's why it's a cliché. The data contained within tables is not particularly useful because, for the most part, the data in tables appears in no particular order. Also, in a properly normalized database, important information is spread out among a number of different tables. Queries are what draw these various data sources together and present the combined information in such a way that users can actually work with the data.
On the Web
The starting database for this walkthrough, Chapter08.accdb, can be downloaded from this book's website.
A database's primary ...