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> Expression    


Definition: A series of functions, calculations, or values that, when passed to the Jet Expression Service, returns a single result.

The term "expression" most often refers to the formula for calculating a value in a control in either a form or report. In this context, it is always preceded by an equals sign (=). It can also refer to a calculated field within a query.

Control Examples:



=[LastName] & ", " [FirstName]

Query Examples:

NetAmount: [Quantity]*[Price]

TwentyFivePercent: [Amount]*.25

FullName: [LastName] & ", " [FirstName]

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