MongoDB Query Language (MQL) compatibility in Azure DocumentDB

Azure DocumentDB provides comprehensive MongoDB Query Language (MQL) compatibility, combining MongoDB's familiar features with Azure's enterprise capabilities. This article provides a version-wise overview of MQL compatibility and feature support across versions 5.0-8.0, including operators, commands, indexes, and the MongoDB wire protocol. Applications can run without code changes, using the same client drivers, SDKs, and tools. Users benefit from Azure's scalability, security, and integration with other Azure services.

Network protocol support

Azure DocumentDB service uses the MongoDB wire protocol, which provides seamless compatibility with existing tools and drivers. Any client driver that supports the MongoDB wire protocol can connect to Azure DocumentDB, so applications can run without code changes.

Developers can keep the same client drivers, software development kits (SDKs), and tools. As a user, you also gain Azure's scalability, security, and deep integration with other services within the Azure platform.

Query language support

In addition to protocol support, Azure DocumentDB provides comprehensive support for MongoDB query language constructs as well.

Note

Azure DocumentDB delivers 99.03% MongoDB compatibility via the wire protocol.

Compatibility philosophy

Overall product compatibility is determined by evaluating the number of MongoDB operators (Aggregation Stages, Aggregation Operators, Query, and Projection Operators and Update Operators) supported by the service. MongoDB commands and admin operations are excluded from this calculation because Azure DocumentDB, as a PaaS offering, supports most these commands in-house, eliminating the need for user intervention. These commands aren't exposed to users; however, based on usage patterns and customer feedback, a subset of commonly used commands is available to simplify the user experience.

The compatibility summary table below details support for each operator type:

Total Supported Percentage
Aggregation Stages 60 58 96.67%
Aggregation Operators 181 181 100%
Query and Projection Operators 45 44 97.78%
Update Operators 22 22 100%

The following section presents a comprehensive breakdown of supported database operators, commands, and more features, offering a clear view of the product’s compatibility and functionality across various scenarios.

Operators

The table here lists the operators that are currently supported in Azure DocumentDB:

Category Operator Supported (v5.0) Supported (v6.0) Supported (v7.0) Supported (v8.0)
Comparison Query Operators $eq ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Comparison Query Operators $gt ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Comparison Query Operators $gte ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Comparison Query Operators $in ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Comparison Query Operators $lt ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Comparison Query Operators $lte ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Comparison Query Operators $ne ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Comparison Query Operators $nin ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Logical Query Operators $and ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Logical Query Operators $not ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Logical Query Operators $nor ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Logical Query Operators $or ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Element Query Operators $exists ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Element Query Operators $type ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Evaluation Query Operators $expr ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Evaluation Query Operators $jsonSchema* ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Evaluation Query Operators $mod ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Evaluation Query Operators $regex ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Evaluation Query Operators $text ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Evaluation Query Operators $where Deprecated in Mongo version 8.0
Geospatial Operators $geoIntersects ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Geospatial Operators $geoWithin ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Geospatial Operators $box ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Geospatial Operators $center ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Geospatial Operators $centerSphere ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Geospatial Operators $geometry ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Geospatial Operators $maxDistance ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Geospatial Operators $minDistance ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Geospatial Operators $polygon ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Geospatial Operators $near ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Geospatial Operators $nearSphere ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Array Query Operators $all ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Array Query Operators $elemMatch ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Array Query Operators $size ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Bitwise Query Operators $bitsAllClear ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Bitwise Query Operators $bitsAllSet ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Bitwise Query Operators $bitsAnyClear ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Bitwise Query Operators $bitsAnySet ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Projection Operators $ ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Projection Operators $elemMatch ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Projection Operators $meta ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Projection Operators $slice ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Miscellaneous Query Operators $comment ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Miscellaneous Query Operators $rand ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Miscellaneous Query Operators $natural ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Field Update Operators $currentDate ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Field Update Operators $inc ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Field Update Operators $min ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Field Update Operators $max ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Field Update Operators $mul ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Field Update Operators $rename ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Field Update Operators $set ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Field Update Operators $setOnInsert ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Field Update Operators $unset ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Array Update Operators $ ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Array Update Operators $[] ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Array Update Operators $[identifier] ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Array Update Operators $addToSet ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Array Update Operators $pop ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Array Update Operators $pull ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Array Update Operators $push ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Array Update Operators $pullAll ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Array Update Operators $each ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Array Update Operators $position ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Array Update Operators $slice ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Array Update Operators $sort ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Bitwise Update Operators $bit ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Arithmetic Expression Operators $abs ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Arithmetic Expression Operators $add ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Arithmetic Expression Operators $ceil ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Arithmetic Expression Operators $divide ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Arithmetic Expression Operators $exp ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Arithmetic Expression Operators $floor ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Arithmetic Expression Operators $ln ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Arithmetic Expression Operators $log ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Arithmetic Expression Operators $log10 ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Arithmetic Expression Operators $mod ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Arithmetic Expression Operators $multiply ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Arithmetic Expression Operators $pow ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Arithmetic Expression Operators $round ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Arithmetic Expression Operators $sqrt ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Arithmetic Expression Operators $subtract ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Arithmetic Expression Operators $trunc ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Array Expression Operators $arrayElemAt ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Array Expression Operators $arrayToObject ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Array Expression Operators $concatArrays ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Array Expression Operators $filter ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Array Expression Operators $firstN ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Array Expression Operators $in ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Array Expression Operators $indexOfArray ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Array Expression Operators $isArray ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Array Expression Operators $lastN ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Array Expression Operators $map ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Array Expression Operators $maxN ✅ Yes ✅ Yes ✅ Yes
Array Expression Operators $minN ✅ Yes ✅ Yes ✅ Yes
Array Expression Operators $objectToArray ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Array Expression Operators $range ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Array Expression Operators $reduce ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Array Expression Operators $reverseArray ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Array Expression Operators $size ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Array Expression Operators $slice ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Array Expression Operators $sortArray ✅ Yes ✅ Yes ✅ Yes
Array Expression Operators $zip ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Bitwise Operators $bitAnd ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Bitwise Operators $bitNot ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Bitwise Operators $bitOr ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Bitwise Operators $bitXor ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Boolean Expression Operators $and ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Boolean Expression Operators $not ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Boolean Expression Operators $or ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Comparison Expression Operators $cmp ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Comparison Expression Operators $eq ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Comparison Expression Operators $gt ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Comparison Expression Operators $gte ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Comparison Expression Operators $lt ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Comparison Expression Operators $lte ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Comparison Expression Operators $ne ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Custom Aggregation Expression Operators $accumulator Deprecated in Mongo version 8.0
Custom Aggregation Expression Operators $function Deprecated in Mongo version 8.0
Data Size Operators $bsonSize ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Data Size Operators $binarySize ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Date Expression Operators $dateAdd ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Date Expression Operators $dateDiff ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Date Expression Operators $dateFromParts ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Date Expression Operators $dateFromString ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Date Expression Operators $dateSubtract ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Date Expression Operators $dateToParts ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Date Expression Operators $dateToString ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Date Expression Operators $dateTrunc ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Date Expression Operators $dayOfMonth ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Date Expression Operators $dayOfWeek ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Date Expression Operators $dayOfYear ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Date Expression Operators $hour ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Date Expression Operators $isoDayOfWeek ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Date Expression Operators $isoWeek ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Date Expression Operators $isoWeekYear ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Date Expression Operators $millisecond ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Date Expression Operators $minute ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Date Expression Operators $month ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Date Expression Operators $second ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Date Expression Operators $toDate ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Date Expression Operators $week ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Date Expression Operators $year ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Literal Expression Operator $literal ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Miscellaneous Operators $getField ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Miscellaneous Operators $rand ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Miscellaneous Operators $sampleRate ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Object Expression Operators $mergeObjects ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Object Expression Operators $objectToArray ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Object Expression Operators $setField ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Set Expression Operators $allElementsTrue ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Set Expression Operators $anyElementTrue ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Set Expression Operators $setDifference ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Set Expression Operators $setEquals ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Set Expression Operators $setIntersection ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Set Expression Operators $setIsSubset ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Set Expression Operators $setUnion ✅ Yes ✅ Yes ✅ Yes ✅ Yes
String Expression Operators $concat ✅ Yes ✅ Yes ✅ Yes ✅ Yes
String Expression Operators $dateFromString ✅ Yes ✅ Yes ✅ Yes ✅ Yes
String Expression Operators $dateToString ✅ Yes ✅ Yes ✅ Yes ✅ Yes
String Expression Operators $indexOfBytes ✅ Yes ✅ Yes ✅ Yes ✅ Yes
String Expression Operators $indexOfCP ✅ Yes ✅ Yes ✅ Yes ✅ Yes
String Expression Operators $ltrim ✅ Yes ✅ Yes ✅ Yes ✅ Yes
String Expression Operators $regexFind ✅ Yes ✅ Yes ✅ Yes ✅ Yes
String Expression Operators $regexFindAll ✅ Yes ✅ Yes ✅ Yes ✅ Yes
String Expression Operators $regexMatch ✅ Yes ✅ Yes ✅ Yes ✅ Yes
String Expression Operators $replaceOne ✅ Yes ✅ Yes ✅ Yes ✅ Yes
String Expression Operators $replaceAll ✅ Yes ✅ Yes ✅ Yes ✅ Yes
String Expression Operators $rtrim ✅ Yes ✅ Yes ✅ Yes ✅ Yes
String Expression Operators $split ✅ Yes ✅ Yes ✅ Yes ✅ Yes
String Expression Operators $strLenBytes ✅ Yes ✅ Yes ✅ Yes ✅ Yes
String Expression Operators $strLenCP ✅ Yes ✅ Yes ✅ Yes ✅ Yes
String Expression Operators $strcasecmp ✅ Yes ✅ Yes ✅ Yes ✅ Yes
String Expression Operators $substr ✅ Yes ✅ Yes ✅ Yes ✅ Yes
String Expression Operators $substrBytes ✅ Yes ✅ Yes ✅ Yes ✅ Yes
String Expression Operators $substrCP ✅ Yes ✅ Yes ✅ Yes ✅ Yes
String Expression Operators $toLower ✅ Yes ✅ Yes ✅ Yes ✅ Yes
String Expression Operators $toString ✅ Yes ✅ Yes ✅ Yes ✅ Yes
String Expression Operators $trim ✅ Yes ✅ Yes ✅ Yes ✅ Yes
String Expression Operators $toUpper ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Text Expression Operator $meta ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Timestamp Expression Operators $tsIncrement ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Timestamp Expression Operators $tsSecond ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Trigonometry Expression Operators $sin ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Trigonometry Expression Operators $cos ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Trigonometry Expression Operators $tan ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Trigonometry Expression Operators $asin ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Trigonometry Expression Operators $acos ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Trigonometry Expression Operators $atan ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Trigonometry Expression Operators $atan2 ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Trigonometry Expression Operators $asinh ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Trigonometry Expression Operators $acosh ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Trigonometry Expression Operators $atanh ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Trigonometry Expression Operators $sinh ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Trigonometry Expression Operators $cosh ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Trigonometry Expression Operators $tanh ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Trigonometry Expression Operators $degreesToRadians ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Trigonometry Expression Operators $radiansToDegrees ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Type Expression Operators $convert ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Type Expression Operators $isNumber ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Type Expression Operators $toBool ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Type Expression Operators $toDate ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Type Expression Operators $toDecimal ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Type Expression Operators $toDouble ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Type Expression Operators $toInt ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Type Expression Operators $toLong ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Type Expression Operators $toObjectId ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Type Expression Operators $toString ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Type Expression Operators $type ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Accumulators ($group, $bucket, $bucketAuto, $setWindowFields) $accumulator Deprecated in Mongo version 8.0
Accumulators ($group, $bucket, $bucketAuto, $setWindowFields) $addToSet ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Accumulators ($group, $bucket, $bucketAuto, $setWindowFields) $avg ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Accumulators ($group, $bucket, $bucketAuto, $setWindowFields) $bottom ✅ Yes ✅ Yes ✅ Yes
Accumulators ($group, $bucket, $bucketAuto, $setWindowFields) $bottomN ✅ Yes ✅ Yes ✅ Yes
Accumulators ($group, $bucket, $bucketAuto, $setWindowFields) $count ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Accumulators ($group, $bucket, $bucketAuto, $setWindowFields) $first ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Accumulators ($group, $bucket, $bucketAuto, $setWindowFields) $firstN ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Accumulators ($group, $bucket, $bucketAuto, $setWindowFields) $last ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Accumulators ($group, $bucket, $bucketAuto, $setWindowFields) $lastN ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Accumulators ($group, $bucket, $bucketAuto, $setWindowFields) $max ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Accumulators ($group, $bucket, $bucketAuto, $setWindowFields) $maxN ✅ Yes ✅ Yes ✅ Yes
Accumulators ($group, $bucket, $bucketAuto, $setWindowFields) $median ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Accumulators ($group, $bucket, $bucketAuto, $setWindowFields) $mergeObjects ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Accumulators ($group, $bucket, $bucketAuto, $setWindowFields) $min ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Accumulators ($group, $bucket, $bucketAuto, $setWindowFields) $percentile ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Accumulators ($group, $bucket, $bucketAuto, $setWindowFields) $push ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Accumulators ($group, $bucket, $bucketAuto, $setWindowFields) $stdDevPop ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Accumulators ($group, $bucket, $bucketAuto, $setWindowFields) $stdDevSamp ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Accumulators ($group, $bucket, $bucketAuto, $setWindowFields) $sum ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Accumulators ($group, $bucket, $bucketAuto, $setWindowFields) $top ✅ Yes ✅ Yes ✅ Yes
Accumulators ($group, $bucket, $bucketAuto, $setWindowFields) $topN ✅ Yes ✅ Yes ✅ Yes
Accumulators (in Other Stages) $avg ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Accumulators (in Other Stages) $first ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Accumulators (in Other Stages) $last ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Accumulators (in Other Stages) $max ✅ Yes ✅ Yes ✅ Yes ✅ Yes
Accumulators (in Other Stages) $median ✅ Yes ✅ Yes ✅ Yes ✅ Yes