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Lesson 10 Using values in criteria expressions
Objective Explain how to use the correct characters so that Access recognizes your criteria expressions.
Usually Access is pretty good at figuring out what you mean when you type a criteria expression.
However, in certain situations, especially if the criteria expression is long or complex, Access may balk when you try to enter an expression. In nearly all cases it’s because you need some special characters to tell Access about the kind of value in your expression. For example: say you want to display work you have done for Network Consultants, Inc. Because there is a comma and a period in the name, Access would become confused. Typing quotation marks around the name, “Network Consultants, Inc.” helps access identify the entire text you want to query on.
View Table
Click the View Table button to see a chart of the special characters.
When Access recognizes the type of value in the expression, it will add these characters automatically.
Learn how to use multiple criteria in your query in the next lesson.

You can construct a criteria expression to find objects in the Operations Manager database. The following sections provide syntax reference information that is useful when creating a criteria expression that includes any of the following elements:
  1. Comparison operators
  2. Wildcard characters
  3. DateTime values
  4. Integer enumeration values