Learn about expression specification

To create an expression, click in the Expression column of a row and then specify the input attributes, variables, and functions that define a calculation. Here is a list of information to help you work with expressions:

• Select and insert attributes and functions into the expression from the Functions and Attributes panels to the right of the expression.

• Enter the text directly into the expression. As you type, functions, attributes, and variables that match what you entered appear in a selection list at the cursor: you can select an item you want to insert.

• Attributes and time expressions are enclosed in single quotes.

• Strings are enclosed in double quotes.