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Arithmetic Operators

  • reference
March 23, 2025
+ 12

Arithmetic operations perform the basic mathematical operations of addition, subtraction, multiplication, division, and modulo within an expression or any numerical value retrieved as part of query clauses. Additionally, N1QL provides a negation operation which changes the sign of a value.

These arithmetic operators only operate on numbers. In N1QL, arithmetic operators have their usual meaning. However, in any of these expressions:

  • If any operand is MISSING, the value of the expression is MISSING.

  • If any operand is NULL and no operand is MISSING, the value of the expression is NULL.

  • If any operand is not a number, the operator evaluates to NULL.

Syntax

There are six different arithmetic syntaxes:

ebnf
ViewCopy
arithmetic-term ::= expr '+' expr |
                    expr '-' expr |
                    expr '*' expr |
                    expr '/' expr |
                    expr '%' expr |
                    '-' expr
Syntax diagram
Operator Description

+

Add values.

-

Subtract right value from left value.

*

Multiply values.

/

Divide left value by right value.

%

Modulo. Divide left value by right value and return the remainder.

NOTE: Modulo is an integer operator and will use only the integer part of each value.

-value

Negate value.

Arguments

expr1, expr2

Number or an expression that results in a number value.

Return Value

A number, representing the value of the arithmetic operation.

Examples

Example 1. Select the longest flight and return its two airports and the distance in feet
Query
n1ql
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SELECT sourceairport, destinationairport, ROUND(distance) AS DistanceInMiles,
       ROUND(distance)*5280 AS DistanceInFeet
FROM `travel-sample`.inventory.route
ORDER BY distance DESC
LIMIT 1;
Returns
json
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[
  {
    "DistanceInFeet": 72906240,
    "DistanceInMiles": 13808,
    "destinationairport": "DFW",
    "sourceairport": "SYD"
  }
]
Example 2. Select the modulo of 5 and 3 and compare to the modulo of 5.4 and 3.4
Modulo with integers
n1ql
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SELECT 5 % 3;
Returns
json
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[
  {
    "$1": 2
  }
]
Modulo with fractions
n1ql
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SELECT 5.4 % 3.4;
Returns
json
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[
  {
    "$1": 2
  }
]

Refer to Comparison Operators for numeric comparisons.