The Expression Builder in Access lets you build expressions by selecting items from lists, helping you create expressions faster and more accurately.

To create an expression by using the Expression Builder, click the Build button in the property box. After completing your expression, the property sheet will look like this: Top of Page. Use …

This article contains examples of expressions in Access to calculate values, validate data, and set a default value for a field or control.

Learn how to use expressions in Access when you need to work with values that do not reside directly in your data.

For expressions: get an overview, use the Expression Builder, learn how to create, find examples, and understand syntax rules.

A query criterion is an expression that Access compares to query field values to determine whether to include the record that contains each value. For example, = "Chicago" is an …

You can nest this query inside of your main query by using a subquery. You can write a subquery in an expression or in a Structured Query Language (SQL) statement in SQL view. In this article

You use IIf to determine if another expression is true or false. If the expression is true, IIf returns one value; if it is false, IIf returns another. You specify the values IIf returns.

In Access, use Instr(), Left(), Trim(), Mid() and other string functions to build or extract the string you want.

When you want to combine the values in two or more text fields in Access, you create an expression that uses the ampersand (&) operator. For example, suppose that you have a form …