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This is documentation for Caché & Ensemble.

For information on converting to InterSystems IRIS, see the InterSystems IRIS Adoption Guide and the InterSystems IRIS In-Place Conversion Guide, both available on the WRC Distributions page (login required).

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Subtraction Operator (–)

Used to find the difference between two numbers or to indicate the negative value of a numeric expression.


Syntax 1

result = number1-number2

Syntax 2



The – operator syntax has these parts:

result Any numeric variable.
number Any numeric expression.
number1 Any numeric expression.
number2 Any numeric expression.


In Syntax 1, the – operator is the arithmetic subtraction operator used to find the difference between two numbers. In Syntax 2, the – operator is used as the unary negation operator to indicate the negative value of an expression.

If an expression is Empty, it is treated as if it were 0.

See Also

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