Database

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Extend db.collection.distinct() to work with multiple fields in a compound key

Currently the distinct() command finds the unique set of values for a SINGLE specified field across a collection or view. For example: db.staff.distinct("last_name" ) If there is an index on the last_name field, the DISTINCT_SCAN plan can use th...

Guest over 5 years ago in Database 1 Submitted

2 VOTE

Cascading delete for DBRefs

Since transactions have been added in 2018, which work across collections (https://www.mongodb.com/docs/manual/core/transactions/) and across shards (https://www.mongodb.com/docs/manual/core/transactions-sharded-clusters/), shouldn't cascading del...

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

4 VOTE

wired

wiredTiger open files usage Currently WT uses a file per collection and index, leading in some scenarios to extremely high number of open files/dhandles. Is there any plan to support one file/dhandle per database?

Guest over 5 years ago in Storage & Transactions 0 Submitted

4 VOTE

Allow multiple text indexes per collection

MongoDb only allow one text index by collection, in contrast of other index types. This is a limitation that makes it difficult to develop projects with search functionality, for example, if you want to add a text search for advanced users on all...

Guest over 5 years ago in Data Modeling & Indexing 1 Submitted

4 VOTE

Ability to enable collection name enforcement

Currently if you perform a find or other operation, and you have a typo in your collection name, the operation will execute successfully and there is no indication that the collection you are operating on doesn't exist. It would be handy if there ...

Guest over 5 years ago in Database 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 SHA2, SHA3 and ECDSA functions to agg framework

It is very useful (and valuable security-wise) to be able to reverify hashes and signatures "on-engine" instead of dragging material out to a client app and running the algo there. The implementations are straightforward and everywhere now so it's...

Guest almost 3 years ago in Querying & Aggregations 0 Submitted

1 VOTE

Capture pre-images for ONLY specified change events

Currently, pre-images are captured for all updates, replacements and deletes on a given collection. Ask: Enable capture of pre-images for ['DELETED', ...] documents only. Context: A customer uses a collection for ingestion, where 16-20M do...

Guest over 1 year ago in Database 2 Submitted

4 VOTE

Improve the election process to consider node reachability

Consider both new and existing sockets to be utilized in order to make more realistic observations about cluster health during an election to avoid for example DNS related issues which would make a node unreachable for new connections.

Guest over 5 years ago in Database 0 Submitted

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