The Update Field dialog box can provide you with access to composing rules for field update.
- Update Field: Select the field name to be updated.
- Apply To: There are two types: update the whole row and update the selected records.
- Operation Mode
- Operation Field
- Operation Field 1 and Operation Field 2
- Operator
- Function
- Expression
- Reverse
- Text boxes to the right of Function
- Apply
- Close
Four operation modes are provided: Assign to All, Single-Field, Double-Field, and Function.
The field applies to compose the expression in the single-field operation mode.
The two fields apply to compose the expression in the double-field operation mode.
Five operators are provided to connect the two operation factors when composing the expression in the single-field or double-field update mode: "+", "-", "*", "/", and "%".
The function applies to composing the expression when employing the function update mode.
The Expression box displays the constructed expression. Click the button on the right side of the combo box to bring up the SQL Expression dialog box. You can either construct a field expression in the dialog box that pops up or enter a field expression directly in the Operation Equation text box. See the SQL Expression Dialog page for SQL expression specific instructions.
Check to switch the two operation factors in the single-field or double-field update mode.
Specify the parameters for certain functions.
Apply the composed expression to the field to be updated.
Quit the settings and close the dialog box.