mongosh | The MongoDB Shell | Runtime Evironment library
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Trending Discussions on mongosh
QUESTION
Could someone help me find the mongoose equivalent of this mongosh query?
I have this data:
...ANSWER
Answered 2021-Oct-03 at 17:39can you try :
QUESTION
I inherited a project to maintain. Apparently there was a decision to switch from CosmosDb to dedicated MongoDb. There is a project in a CI pipeline that seeds mongo database with collections and creates indexes. Now it is done with commands like that:
...ANSWER
Answered 2022-Mar-29 at 19:44I had a totally wrong set my replica set with sharding cluster. Once I used the instructions for deploying mongodb sharded cluster from this stackoverflow answer, my code started working.
QUESTION
What?
Trying to remove an element from an array of objects in a mongo document.
I use: go version go1.17.1 darwin/amd64; go.mongodb.org/mongo-driver v 1.8.4; MongoDB 5.0.6 Enterprise
Shortened version of the function with everything as plain as possible:
...ANSWER
Answered 2022-Mar-10 at 10:32bson.D
models a document, with an ordered list of key-value pairs, where the key is the property name, value is the property's value.
So if you intend to use bson.D
to model documents, you always have to write a bson.D
composite literal where there's a document in the equivalent shell command.
So your update
document must look like this:
QUESTION
I have a MongoDB collection consisting of such documents:
...ANSWER
Answered 2022-Feb-23 at 20:39You can run query in mongodb compass shell (_MONGOSH)
QUESTION
I have two users, admin and user.
...ANSWER
Answered 2022-Feb-16 at 08:16I guess python runs some additional queries in background.
From MongoDB documentation:
Roles which are created in other database than
admin
can only include privileges that apply to its database and can only inherit from other roles in its database.A role created in the
admin
database can include privileges that apply to any database or to the cluster resource, and can inherit from roles in other databases as well as theadmin
database.
I would suggest to create the user in admin
database and grant roles accordingly:
QUESTION
I have a NodeJS Express App that depends on MongoDB change streams. For them to be available, MongoDB has to be configured to run as a replica set (even if there is only one node in that set).
I'm working on Windows 10 pro.
I'm trying to dockerize this App, basing the MongoDB container off the official mongo:5
image.
For this to work, I want an automated way of initializing the DB as a replica set. Tutorials I've found rely on either exec
ing into the container and running rs.initiate()
from mongosh
(or similar approaches), which is manual work I want to avoid. Or they use hacks like wait-for-it.sh
as here.
I feel there must be a better solution, based somehow on the paragraph "Initializing a fresh instance", from the docs.
It describes that
When a container is started for the first time it will execute files with extensions
.sh
and.js
that are found in/docker-entrypoint-initdb.d
.
When exactly in the container lifecycle does that happen? After the container is initialized? Or after the DB is ready? Because this seems to be the perfect place for this initialization logic, which runs flawlessly when executed manually, from within the container.
However, placing
...ANSWER
Answered 2022-Feb-16 at 08:14I just made it work with a wild experiment. Means I simply left out the config in my call to rs.initiate()
, from the JS script. For some reason, the script then runs successfully and change streams become available to my NodeJS backend.
I will post everything that's needed to run a MongoDB docker with change streams enabled:
QUESTION
Mongo appears to be returning duplicate documents for the same query, i.e. it returns more documents than there are unique _id
s in the returned documents:
ANSWER
Answered 2022-Feb-09 at 13:59Try checking if you store indexes for a_boolean_key
field.
When performing a
count
, MongoDB can return the count using only the index
So, maybe you don't have indexes for all documents, so count
method result is not equal to your manual count.
QUESTION
I want to do a diacritic-insensitive and case-insensitive search in mongo. In Python this can be done using collation:
...ANSWER
Answered 2022-Feb-04 at 18:18QUESTION
I want to search in mongodb a regex expression using text index (I believe for regex search this one is most beneficial).
There is only one field on which to carry out the query. I have created the index like
...ANSWER
Answered 2022-Jan-30 at 17:24It is not designed that way
Case insensitive regular expression queries generally cannot use indexes effectively. The $regex implementation is not collation-aware and is unable to utilize case-insensitive indexes.
QUESTION
MongoDB can output data in Extended JSON format. For example, in relaxed mode, a date is represented as:
...ANSWER
Answered 2022-Jan-29 at 02:40You are right, the legacy (aka deprecated) mongo shell does not support extended JSON parsing. However, the new mongosh shell provides the EJSON class for exactly that.
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