Expression

Description

The expression for a computed field control in the DataWindow. The expression is made up of calculations and DataWindow expression functions. The DataWindow evaluates the expression to get the value it will display in the computed field.

Applies to

Computed field controls

Syntax

Describe and Modify argument:

"computename.Expression { = ’string ' }"

Parameter

Description

computename

The name of the computed field control in the DataWindow for which you want to get or set the expression

string

A string whose value is the expression for the computed field

Usage


In the painter

Select the control and set the value in the Properties view, General tab, Expression option. The More button displays the Modify Expression dialog, which provides help in specifying the expression. The Verify button tests the expression.

Examples

Example 1

setting = dw1.Describe("comp_1.Expression")

dw1.Modify("comp_1.Expression='avg(salary for all)'")