Querying & Aggregations

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Improve small collection lookup performance

What problem are you trying to solve? Focus on the what and why of the need you have, not the how you'd like it solved. Improved performance for lookups from large to small collections (where many origin documents match the same looked-up doc...

Ryan Peggs about 1 month ago in Querying & Aggregations 0 Future Consideration

1 VOTE

Allow descriptions for $expr sections in DB validation

What problem are you trying to solve? Focus on the what and why of the need you have, not the how you'd like it solved. Our collection has some complex $expr rules for validating our collection. Unfortunately, $expr does not allow us to add a...

Habibullah Aslam about 1 month ago in Data Modeling & Indexing / Querying & Aggregations 1 Will Not Implement

4 VOTE

Allow Pinning Query Plan Cache Key to a Fixed Plan for a Given Query Shape Hash

Allow Pinning Query Plan Cache Key to a Fixed Plan for a Given Query Shape Hash n MongoDB 8.0, the new setQuerySettings command allows administrators to enforce index hints and other behavior based on the query shape hash. This gives users partia...

Vinicius Grippa 4 months ago in Querying & Aggregations 0 Submitted

3 VOTE

Implement a $hash operator for queries

Current State: MongoDB currently lacks a native $hash operator in the aggregation/query language. While certain helpers like convertShardKeyToHashed or $toHashedIndexKey exist, they are limited in scope: Not available as true query operators (e....

Guest 5 months ago in Querying & Aggregations 0 Submitted

2 VOTE

Leveraging Group By/Distinct Query to use regular Index

When using Group By or Distinct queries on database, provide the ability to leverage existing index i.e these queries today will miss using existing index db.collection.distinct("field") db.collection.aggregate([ { $group: { _id: "$category", ...

Guest 9 months ago in Querying & Aggregations 0 Submitted

1 VOTE

Is there any limitation on size of query in pipeline (character in query, not data)

I have an aggregate query, when the character in pipeline over 21066 character, the result return wrong format that the pipeline expected. So I wonder is there any limitation on size of query in pipeline? My case is: Query: [ "$match":{"profileI...

Guest about 1 year ago in Querying & Aggregations 0 Submitted

1 VOTE

Support concise correlated queries for $graphLookUp

Similar to $lookUp, support concise correlated queries for $graphLookUp. It would allow adding a $project stage to reduce overhead.

Guest about 1 year ago in Querying & Aggregations 0 Submitted

1 VOTE

$sort should allow 0 as argument meaning "no sort"

The $sort operator and aggregation stage should allow 0 (possibly also null) as an argument for the field sort order, meaning, "Don't sort." This allows a variable to be passed in that can conditionally skip the sort operation, in addition to the ...

Guest over 1 year ago in Querying & Aggregations 0 Submitted

1 VOTE

Feature to perform Machine Learning predictive analysis and classification in MongoDB

I want to bring the machine learning compute and predictive analysis into MongoDB atlas. Instead of ETL my data out of Atlas to achieve this, I will reduce my architectural complexity by having an aggregation operator that does this on my document...

Guest over 1 year ago in Querying & Aggregations 0 Submitted

1 VOTE

Add Relaxed mode support for the $out operator

Add Relaxed mode support for the $out operator. *and include as option in the existing drivers

Guest over 1 year ago in Querying & Aggregations 0 Submitted

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