FileMaker Pro 4.1 Mac User's Guide

2-16 FileMaker Pro User’s Guide
Field references
Operators
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A field reference is a field name that acts as a placeholder for the field’s value.
When FileMaker Pro evaluates the formula in the current record, the value in
the field represented by the field reference is used in the calculation.
(Quotation marks indicate a text expression.)
This expression Returns
Invoice Total*0.075 7.5 when the value in the Invoice Total field is
100.
First Name & " " & Last Name "John Jones" when the value in the First Name
field is “John” and the value in the Last Name field
is “Jones”.
Relationship Name::Invoice
Total*0.075
7.5 when the value in the Invoice Total field is
100. The Invoice Total field is located in a related
database.
The syntax is Relationship name::Field name
You combine expressions using operators, symbols that determine which
operation to perform on the expressions. You place operators between the
expressions you want to perform the operation on, as in:
Subtotal + Tax
Each operator has a precedence, which determines the order in which
calculations are performed in a formula containing more than one operator.
FileMaker Pro evaluates operators from left to right and performs
multiplication and division before addition and subtraction. You can change
the precedence by enclosing the expression you want calculated first in
parentheses.
This expression Returns
2+3*2 8
(2+3)*2 10
Choose FileMaker Help Index from the or Help menu, and then type:
E operators