Expression Tab
You can use the Expression tab to create a complex expression. The Expression tab contains the following elements:
Available Fields Riser Bar - Displays the available fields from the source tables.
Functions Riser Bar - Displays aggregate and numeric functions that you can use to develop expressions.
Expression Toolbar - Contains common mathematical and logical functions. You can also use it to import, export, and validate expressions.
Expression Field - Displays the expression created with the fields, functions, and operations available in the Expression tab.