Querying & Aggregations

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Document scoped RBAC - Permission for collection document fields

Roles and accesses can be defined on the basis of collections that define roles for users. It would be nice if these access permissions could be made within the scope of the fields under the collection and the query results would be returned accor...

Guest about 3 years ago in Querying & Aggregations 1 Submitted

3 VOTE

Support expressions in $densify range bounds

The $densify aggregation pipeline stage seems unable to evaluate range bounds expressions, requiring the range bounds to be constant. See the following example (the collection testcoll contains a single documents with only the _id field): ``` s...

Guest over 3 years ago in Querying & Aggregations 3 Submitted

2 VOTE

Flatten arrays in group stage

Have group operators to flatten document arrays into a single one with or without repeated elements. So -> doc1 = {arr: [1,2,3,4], gr: "group"}, doc2 = {arr: [5, 6, 7, 8], gr: "group"} {$group: {_id: "$gr", arrays: {$***: "$arr"} } } => {_id...

Guest over 2 years ago in Querying & Aggregations 1 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 over 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 over 1 year ago in Querying & Aggregations 0 Submitted

2 VOTE

geo

It would be nice to get the length of an LineString of a geo-json object or the possibility to write an aggregation to calculate it.

Guest almost 3 years ago in Querying & Aggregations 0 Submitted

2 VOTE

$dateDiff operator should be useful to calculate age

In the documentation it says: " For example, two dates that are 18 months apart would return 1 year difference instead of 1.5 years.". But if startDate is 2021-08-01 and endDate is 2023-02-01, the result is 2 years difference. I think it should be...

Guest about 3 years ago in Querying & Aggregations 1 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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