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Add numerically-ordered index feature which forces a field to maintain ordering

I would like MongoDB to add better support for ordered lists across documents in a collection. This feature would allow the user to designate a field such as "position", and the DB would ensure the values of that field across documents remain in a...

Guest about 3 years ago in Data Modeling & Indexing 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 over 1 year ago in Querying & Aggregations 0 Submitted

3 VOTE

Option to prohibit a non-voting member from becoming a sync source of a voting member

Hi, Our proposition in a few words: add a replica set option to allow chained replication but with the following exception: a non-voting member cannot become a sync source of a voting member under any circumstance. This proposition would allow c...

Guest almost 5 years ago in Database 0 Submitted

1 VOTE

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Guest over 1 year ago in Replication & Sharding 0 Submitted

2 VOTE

Use dedicated interface for replication and balancing

Like many other big database system, MongoDB may support to specify dedicated interfaces for replication and/or for the balancer (sharding) Currently you can configure replication sets and shards members only by single hostname/IP-Address, i.e. *...

Guest over 3 years ago in Replication & Sharding 0 Submitted

2 VOTE

Make it clear an index not on present on all shards

We recently had an issue where an index did not get created on all shards. When we ran getIndexes() on mongos it reported the index was present. So we dropped another redundant index thinking all would be well - it was not. We had serious performa...

Guest over 3 years ago in Data Modeling & Indexing 0 Submitted

3 VOTE

Validation for referential integrity

Currently, with the JSON Schema validation, we are able to limit the values for a field using enumerations. However, we need to have a way to limit the values to those entered in another collection.

Guest about 5 years ago in Database 0 Submitted

1 VOTE

JSON

I'm converting a lot of data for export from MongoDB -> Postgresql I would like an aggregation function to convert an object to JSON { "$addField": { "_id": true, "json": { '$convert': { 'input': '$subdocument', 'to': 'json', # // Id...

Guest over 1 year ago in Querying & Aggregations 0 Submitted

3 VOTE

geoIntersects feature for 2D index

At Airbus, we would like to use geoIntersects feature with 2D Index. We don't need 2DSphere Index, but we have to use it if we want to have geoIntersects avalaible. As a consequence, we have to manage Spherical margins which introduces a useless a...

Guest over 5 years ago in Database 1 Submitted

1 VOTE

Self-Managed Computed Collections

This feature would enable MongoDB to automatically generate common patterns by computing entire collections. A particularly useful application would be the ability to identify duplicate fields within a collection and create a computed collection t...

Guest almost 2 years ago in Database 0 Submitted

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