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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 about 3 years 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

Add hash function (eg. md5) to aggregation pipeline

I would like to implement hash-based sharding in my own application on top of MongoDB. For that purpose, I would like to pull a stable pseudorandom subset of documents into each of my servers, and I would like to do so without enlarging the docume...

Guest about 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 almost 2 years ago in Querying & Aggregations 0 Submitted

2 VOTE

hint support for $graphLookup

Currently you can supply a `hint` to the `aggregation` call in order to tell MongoDB to use a specific index for the initial `$match`. But there is currently no way to specify which index to use for a `$graphLookup` later in the pipeline. I would...

Guest over 3 years 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 almost 2 years ago in Querying & Aggregations 0 Submitted

1 VOTE

Aggregations should allow an empty sort stage instead of returning an error

When you run an aggregation pipeline that contains an empty sort stage (like `{"$sort": {}}`) MongoDB returns the error message "$sort stage must have at least one sort key". It would be really helpful if such a stage would work and simply not app...

Guest almost 2 years ago in Querying & Aggregations 0 Submitted

1 VOTE

Sorting support on Array fields.

Presently, I'm attempting to arrange(sort) the documents within my collection based on a key nested within an array object. However, sorting isn't functioning as expected in this scenario. A proper explanation with example is here what I mean. ht...

Guest about 2 years ago in Querying & Aggregations 0 Submitted

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