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$bitAnd

Definition

Computes bitwise AND of integers.

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

Syntax

{ "$bitAnd": [ <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 — $bitAnd expects numeric operands
missing Field absent Error — $bitAnd expects numeric operands
decimal 2.5 0 (int64)
numeric string "12" Error — $bitAnd expects numeric operands
text "hello" Error — $bitAnd expects numeric operands
boolean true Error — $bitAnd expects numeric operands
typed date {"$date":"2026-01-15T15:00:00Z"} Error — $bitAnd expects numeric operands
empty array [] Error — $bitAnd expects numeric operands
numeric array [1,2,3] Error — $bitAnd expects numeric operands
object {"x":1} Error — $bitAnd expects numeric operands
null null Error — $bitAnd expects numeric operands
missing Field absent Error — $bitAnd expects numeric operands
decimal 2.5 2 (int64)
numeric string "12" Error — $bitAnd expects numeric operands
text "hello" Error — $bitAnd expects numeric operands
boolean true Error — $bitAnd expects numeric operands
typed date {"$date":"2026-01-15T15:00:00Z"} Error — $bitAnd expects numeric operands
empty array [] Error — $bitAnd expects numeric operands
numeric array [1,2,3] Error — $bitAnd expects numeric operands
object {"x":1} Error — $bitAnd expects numeric operands

Argument handling

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

Examples

Expression: 

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

Input document: 

{}

Observed SrotaX result: 1 (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 — $bitAnd expects numeric operands
missing Field absent Error — $bitAnd expects numeric operands
zero 0 0 (int64)
negative -2 4 (int64)
decimal 2.5 0 (int64)
numeric string "12" Error — $bitAnd expects numeric operands
text "hello" Error — $bitAnd expects numeric operands
empty string "" Error — $bitAnd expects numeric operands
boolean true Error — $bitAnd expects numeric operands
false false Error — $bitAnd expects numeric operands
typed date {"$date":"2026-01-15T15:00:00Z"} Error — $bitAnd expects numeric operands
decimal128 {"$numberDecimal":"1.25"} 1 (int64)
empty array [] Error — $bitAnd expects numeric operands
numeric array [1,2,3] Error — $bitAnd expects numeric operands
mixed array [1,null,"x",3] Error — $bitAnd expects numeric operands
nested array [[1,2],[3]] Error — $bitAnd expects numeric operands
empty object {} Error — $bitAnd expects numeric operands
object {"x":1} Error — $bitAnd expects numeric operands
ISO date string "2026-01-15T15:00:00Z" Error — $bitAnd expects numeric operands

Argument: integer[1]

Input case Supplied value SrotaX result
null null Error — $bitAnd expects numeric operands
missing Field absent Error — $bitAnd expects numeric operands
zero 0 0 (int64)
negative -2 2 (int64)
decimal 2.5 2 (int64)
numeric string "12" Error — $bitAnd expects numeric operands
text "hello" Error — $bitAnd expects numeric operands
empty string "" Error — $bitAnd expects numeric operands
boolean true Error — $bitAnd expects numeric operands
false false Error — $bitAnd expects numeric operands
typed date {"$date":"2026-01-15T15:00:00Z"} Error — $bitAnd expects numeric operands
decimal128 {"$numberDecimal":"1.25"} 1 (int64)
empty array [] Error — $bitAnd expects numeric operands
numeric array [1,2,3] Error — $bitAnd expects numeric operands
mixed array [1,null,"x",3] Error — $bitAnd expects numeric operands
nested array [[1,2],[3]] Error — $bitAnd expects numeric operands
empty object {} Error — $bitAnd expects numeric operands
object {"x":1} Error — $bitAnd expects numeric operands
ISO date string "2026-01-15T15:00:00Z" Error — $bitAnd 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 1 (int64) 1 (int32)
integer[0] / null Error — $bitAnd expects numeric operands null
integer[0] / missing Error — $bitAnd expects numeric operands null
integer[0] / zero 0 (int64) 0 (int32)
integer[0] / negative 4 (int64) 4 (int32)
integer[0] / decimal 0 (int64) Error — Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $bitAnd only supports int and long operands.
integer[0] / decimal128 1 (int64) Error — Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $bitAnd only supports int and long operands.
integer[1] / null Error — $bitAnd expects numeric operands null
integer[1] / missing Error — $bitAnd expects numeric operands null
integer[1] / zero 0 (int64) 0 (int32)
integer[1] / negative 2 (int64) 2 (int32)
integer[1] / decimal 2 (int64) Error — Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $bitAnd only supports int and long operands.
integer[1] / decimal128 1 (int64) Error — Executor error during aggregate command on namespace: fluxion_operator_parity_disposable.$cmd.aggregate :: caused by :: $bitAnd only supports int and long operands.
all / empty arguments Error — $bitAnd expects an array of at least two numeric operands -1 (int32)

Download full comparison evidence.