Skip to content

$bitOr

Definition

Computes bitwise OR of integers.

Expression operator · Arithmetic · Studio Visual: not exposed. Studio validates the complete expression separately.

Syntax

{ "$bitOr": [ <integer>, ... ] }

Replace angle-bracket placeholders with expressions or values.

Optional parameters may be omitted.

Parameters

Parameter Required Description
integer See argument count below Integer expression used in the bitwise operation.

Arguments are positional: keep the order shown. Supply 2 or more arguments.

Behavior

The following observations use the example expression below. Each row substitutes one argument while retaining the other example arguments. A missing field differs from an explicit null; the result shown is what Core actually returned.

For the integer argument:

Input case Supplied value Result
null null Error — $bitOr expects numeric operands
missing Field absent Error — $bitOr expects numeric operands
decimal 2.5 7 (int64)
numeric string "12" Error — $bitOr expects numeric operands
text "hello" Error — $bitOr expects numeric operands
boolean true Error — $bitOr expects numeric operands
typed date {"$date":"2026-01-15T15:00:00Z"} Error — $bitOr expects numeric operands
empty array [] Error — $bitOr expects numeric operands
numeric array [1,2,3] Error — $bitOr expects numeric operands
object {"x":1} Error — $bitOr expects numeric operands
null null Error — $bitOr expects numeric operands
missing Field absent Error — $bitOr expects numeric operands
decimal 2.5 3 (int64)
numeric string "12" Error — $bitOr expects numeric operands
text "hello" Error — $bitOr expects numeric operands
boolean true Error — $bitOr expects numeric operands
typed date {"$date":"2026-01-15T15:00:00Z"} Error — $bitOr expects numeric operands
empty array [] Error — $bitOr expects numeric operands
numeric array [1,2,3] Error — $bitOr expects numeric operands
object {"x":1} Error — $bitOr expects numeric operands

Argument handling

Invocation Result
{"$bitOr":[]} Error — $bitOr expects an array of at least two numeric operands
{"$bitOr":{"unexpected":1}} Error — $bitOr expects an array of at least two numeric operands

Examples

Expression: 

{
  "$bitOr": [
    3,
    5
  ]
}

Input document: 

{}

Observed SrotaX result: 7 (int64).

Detailed input cases

Expand the complete argument-by-argument test matrix

Each table changes only the indicated argument from the example above. Other arguments retain their baseline values. Values normally come from the input field probe; literal configuration arguments are replaced directly. “Missing” means the field is absent, not explicitly null. Numeric strings are strings, not numbers.

Argument: integer[0]

Input case Supplied value SrotaX result
null null Error — $bitOr expects numeric operands
missing Field absent Error — $bitOr expects numeric operands
zero 0 5 (int64)
negative -2 -1 (int64)
decimal 2.5 7 (int64)
numeric string "12" Error — $bitOr expects numeric operands
text "hello" Error — $bitOr expects numeric operands
empty string "" Error — $bitOr expects numeric operands
boolean true Error — $bitOr expects numeric operands
false false Error — $bitOr expects numeric operands
typed date {"$date":"2026-01-15T15:00:00Z"} Error — $bitOr expects numeric operands
decimal128 {"$numberDecimal":"1.25"} 5 (int64)
empty array [] Error — $bitOr expects numeric operands
numeric array [1,2,3] Error — $bitOr expects numeric operands
mixed array [1,null,"x",3] Error — $bitOr expects numeric operands
nested array [[1,2],[3]] Error — $bitOr expects numeric operands
empty object {} Error — $bitOr expects numeric operands
object {"x":1} Error — $bitOr expects numeric operands
ISO date string "2026-01-15T15:00:00Z" Error — $bitOr expects numeric operands

Argument: integer[1]

Input case Supplied value SrotaX result
null null Error — $bitOr expects numeric operands
missing Field absent Error — $bitOr expects numeric operands
zero 0 3 (int64)
negative -2 -1 (int64)
decimal 2.5 3 (int64)
numeric string "12" Error — $bitOr expects numeric operands
text "hello" Error — $bitOr expects numeric operands
empty string "" Error — $bitOr expects numeric operands
boolean true Error — $bitOr expects numeric operands
false false Error — $bitOr expects numeric operands
typed date {"$date":"2026-01-15T15:00:00Z"} Error — $bitOr expects numeric operands
decimal128 {"$numberDecimal":"1.25"} 3 (int64)
empty array [] Error — $bitOr expects numeric operands
numeric array [1,2,3] Error — $bitOr expects numeric operands
mixed array [1,null,"x",3] Error — $bitOr expects numeric operands
nested array [[1,2],[3]] Error — $bitOr expects numeric operands
empty object {} Error — $bitOr expects numeric operands
object {"x":1} Error — $bitOr expects numeric operands
ISO date string "2026-01-15T15:00:00Z" Error — $bitOr expects numeric operands

Verification

This page records 41 executed cases. It covers individual argument substitutions, not every cross-product of arguments, locale, daylight-saving transitions, numeric overflow, collation or resource limits. No untested behavior is guaranteed.

Download exact expressions, inputs and SrotaX results. Errors are observed messages, not stable public error codes. The reference generator reads the checked-in execution report; do not edit generated observations by hand.

MongoDB differences

Compared with MongoDB 9.0.4: 0 exact BSON matches, 27 both rejected, 14 value/type/acceptance differences, 0 object-field-order differences.

“Exact” includes numeric BSON types and object key order. A value of 3 as int32 differs from 3.0 as double. Object-field-order differences are reported separately; object key ordering is not enforced by the engine regression baseline. Both rejected does not mean the error codes or messages match. This is finite-case evidence, not full compatibility certification.

Show observed differences
Tested case SrotaX MongoDB
all / baseline 7 (int64) 7 (int32)
integer[0] / null Error — $bitOr expects numeric operands null
integer[0] / missing Error — $bitOr expects numeric operands null
integer[0] / zero 5 (int64) 5 (int32)
integer[0] / negative -1 (int64) -1 (int32)
integer[0] / decimal 7 (int64) Error — Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $bitOr only supports int and long operands.
integer[0] / decimal128 5 (int64) Error — Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $bitOr only supports int and long operands.
integer[1] / null Error — $bitOr expects numeric operands null
integer[1] / missing Error — $bitOr expects numeric operands null
integer[1] / zero 3 (int64) 3 (int32)
integer[1] / negative -1 (int64) -1 (int32)
integer[1] / decimal 3 (int64) Error — Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $bitOr only supports int and long operands.
integer[1] / decimal128 3 (int64) Error — Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $bitOr only supports int and long operands.
all / empty arguments Error — $bitOr expects an array of at least two numeric operands 0 (int32)

Download full comparison evidence.