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Arithmetic expressions can be used to set a value of a value variable based on other values used in a query. To use arithmetic operations, start a statement with a value variable and an equal sign, followed by an expression.

An expression describes a computation of a value in a query. It can be used only in a match clause or a condition of a rule and can contain any combination of the following elements:

Expression example
?x = $s + 1;

In the above example, the value variable ?x is bound to the value of the attribute in $s added 1.


TypeQL includes the following arithmetic operations for values, presented in the order of operations in an expression:

  1. () — parentheses.

  2. ^ — exponentiation (power).

  3. * — multiplication.

  4. / — division.

  5. % — modulo (the remainder of a division).

  6. + — addition.

  7. - — subtraction.

Arithmetic example
?gb = (($s + ?o)/ 1024) / 1024;

In the above example, the value variable ?gb is bound to the result of a complex arithmetic expression. The expression takes the value of concept variable $s, adds it to a value of value variable ?o, then divides the result by 1024, and finally divides the result by 1024 again.

Arithmetic operations are often used in a combination with comparators and rules.

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