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In a field expression, an operator is used to compare a field with a particular value that a user specifies.
A field expression is composed of the following:
The value against which you want to compare a specified field. This value is also known as a field value.
The operator specifies the action that must be performed. For example, if you want to obtain a field A that has the exact value of 100, you must use the equal (=) operator. Every field value has a defined set of operators. You can only select an operator from the range of operators that are defined for the selected field value.
The syntax for a field expression is as follows:
The following table lists some examples of a field expression:
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