Expression Builder wizard - Constant Options page

Use this page to specify whether you want to use a numeric constant or a string constant as the value of the expression.
Numeric constant
Select this option to specify a numeric constant as the value of the expression. A numeric constant can be an integer, floating point, or decimal value.
String constant
Select this option to specify a string constant as the value of the expression. A string constant can be a character or graphic string, a hexadecimal value, or a host variable name.

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