A constant value is a value that does not change while a procedure is being processed (in contrast to a variable, a value that can change during processing).
Constant values are used in selection criteria comparisons, math formulas, proper names, and other text and numeric expressions.
In a script, a constant value can be used wherever its value type is allowed. The value types of constants are the same as the basic field value types: text, number, numeric string, date, time, and dollar.
The format for typing constant values is as follows:
Enclose Text constants in double quotes ("TEXT").
Use slashes in Date constants (01/01/2001).
Use colons in Time constants (09:30:00).
Do not type formatting characters in numeric strings.
Do not type commas in Number constants.
for MEMBERS with LAST NAME = " SPENCER "
and ZIP CODE > 90000 ;
In this query statement, both the last name SPENCER and the zip code 90000 are constant values.