I'm new to mongo database.Please help me in writing the query updation. I already had a collection in mongo and i would like to add a new field in existing object field.the structure is as follows.
{
"_class" : "PersistentContent",
"originalId" : "2070",
"videoInfo" : {
"test1" : ["res"]
},
}
I would like to update the structure to below format.
{
"_class" : "PersistentContent",
"originalId" : "2070",
"videoInfo" : {
"test1" : ["res"],
"test2" : ["res2"]
},
}
How to update the collection and add test2 into videoInfo tag.
use
db.test.update({"originalId" : "2070"},
{
$set : { "videoInfo.test2" : ["res2"] }
})
Related
I have records like:
{
"_id" : ObjectId("5f99cede36fd08653a3d4e92"),
"accessions" : {
"sample_accessions" : {
"5f99ce9636fd08653a3d4e86" : {
"biosampleAccession" : "SAMEA7494329",
"sraAccession" : "ERS5250977",
"submissionAccession" : "ERA3032827",
"status" : "accepted"
},
"5f99ce9636fd08653a3d4e87" : {
"biosampleAccession" : "SAMEA7494330",
"sraAccession" : "ERS5250978",
"submissionAccession" : "ERA3032827",
"status" : "accepted"
}
}
}
}
How do I query by the mongo id in sample_accessions? I thought this should work but it doesn't. What should I be doing?
db.getCollection('collection').find({"accessions.sample_accessions":"5f99ce9636fd08653a3d4e86"})
The id is a key and check whether key is exists or not use $exists, customize response using project to get specific object
db.getCollection('collection').find(
{
"accessions.sample_accessions.5f99ce9636fd08653a3d4e86": {
$exists: true
}
},
{ sample_doc: "$accessions.sample_accessions.5f99ce9636fd08653a3d4e86" }
)
Playground
I'm trying to update an existing document in a MongoDb. There are many explanations how to do this if you want to update or add key/value pairs on the first level. But in my use-case, I need to create with the first updateOne (with upsert option set) a document with the following structure:
{
"_id" : "1234",
"raw" : {
"meas" : {
"meas1" : {
"data" : "blabla"
}
}
}
}
In the second command, I need to add - in the same document - a "meas2" field at the level of "meas1". My desired output is:
{
"_id" : "1234",
"raw" : {
"meas" : {
"meas1" : {
"data" : "blabla"
},
"meas2" : {
"data" : "foo"
}
}
}
}
I played with statements like
updateOne({"_id":"1234"},{$set:{"raw":{"meas":{"meas2":{"data":"foo"}}}}}, {"upsert":true})
and also with $push, both variants with insert - here only the document and also insertOne, but nothing produces the desired output. Is there a MongoDb expert who could give a hint ? ... I'm sure this functionality exists... Thanks in advance!
When you update {$set: {"raw":{"meas":{"meas2":{"data":"foo"}}}} you're not adding "mesa2" to "meas" but rather you're overriting "raw" completely.
In order to change / add one field in a document refer to it with dot notations.
The command you want is updateOne({"_id": "1234"}, {$set: {"raw.meas.mesa2": { "data" : "foo" }}}, {"upsert":"true"})
You need to understand the below concept first
Set Fields in Embedded Documents, with details document check at official documentation of mongo
For your problem, just look at the below execution on the mongo shell:
> db.st4.insert({
... "_id" : "1234",
... "raw" : {
... "meas" : {
... "meas1" : {
... "data" : "blabla"
... }
... }
... }
... })
WriteResult({ "nInserted" : 1 })
> db.st4.find()
{ "_id" : "1234", "raw" : { "meas" : { "meas1" : { "data" : "blabla" } } } }
>
> // Below query will replace the raw document with {"meas":{"meas2":{"data":"foo"}}}, will not add
> //db.st4.updateOne({"_id":"1234"},{$set:{"raw":{"meas":{"meas2":{"data":"foo"}}}}}, {"upsert":true})
>// By using the dot operator, you actually write the values inside the documents i.e you are replacing or adding at raw.meas.mesa2 i.e inside the document of mesa2.
> db.st4.updateOne({"_id":"1234"},{$set: {"raw.meas.mesa2": { "data" : "foo" }}}, {"upsert":"true"})
{ "acknowledged" : true, "matchedCount" : 1, "modifiedCount" : 1 }
> db.st4.find().pretty()
{
"_id" : "1234",
"raw" : {
"meas" : {
"meas1" : {
"data" : "blabla"
},
"mesa2" : {
"data" : "foo"
}
}
}
}
>
I am using the MongoDB Async Driver to create a little Program were i have to save a User-Profile in the Database.
So i have a Database looking like this
`{
"_id" : ObjectId("5a1743f086060f1bbc319cdb"),
"id" : "aUser1",
"SomeArray" : {
"Name" : "SomeName"
}
}
{
"_id" : ObjectId("5a1743f186060f1bbc319cdc"),
"id" : "aUser2",
"SomeArray" : {
"Name" : "SomeName"
}
}
{
"_id" : ObjectId("5a1743f286060f1bbc319cdd"),
"id" : "aUser3",
"SomeArray" : {
"Name" : "SomeName"
}
}`
And now i try to figure out if the User 1 already has created a Profile.
Whith the old driver i would know how but with the , for me new, Async-Driver it sems a little bit tricky, do i have to make an Callback for this ?
I have a set of mongodb documents with the following structure:
{
"_id" : NUUID("58fbb893-dfe9-4f08-a761-5629d889647d"),
"Identifiers" : {
"IdentificationLevel" : 2,
"Identifier" : "extranet\\test#test.com"
},
"Personal" : {
"FirstName" : "Test",
"Surname" : "Test"
},
"Tags" : {
"Entries" : {
"ContactLists" : {
"Values" : {
"0" : {
"Value" : "{292D8695-4936-4865-A413-800960626E6D}",
"DateTime" : ISODate("2015-04-30T09:14:45.549Z")
}
}
}
}
}
}
How can I make a query with the mongo shell which finds all documents with a specific "Value" (e.g.{292D8695-4936-4865-A413-800960626E6D} in the Tag.Entries.ContactLists.Values path?
The structure is unfortunately locked by Sitecore, so it is not an options to use another structure.
As your sample collection structure show Values is object, it contains only one Value. Also you must check for Value as it contains extra paranthesis. If you want to get Value from given structure try following query :
db.collection.find({
"Tags.Entries.ContactLists.Values.0.Value": "{292D8695-4936-4865-A413-800960626E6D}"
})
I'm trying to use the MongoDB to reassign IDs. However, it is not setting IDs equal to the value I assign, but rather it is creating a new ObjectId. How do I assign my own ID?
> db.pGitHub.find();
{ "_id" : ObjectId("516f202da1faf201daa15635"),
"url" : { "raw" : "https://github.com/Quatlus",
"domain" : "github.com", "canonical" : "https://github.com/quatlus" } }
{ "_id" : ObjectId("516f202da1faf201daa15636"),
"url" : { "raw" : "https://github.com/Quasii",
"domain" : "github.com", "canonical" : "https://github.com/quasii" } }
> db.pGitHub.find().forEach(function(myProfile) {
var oldId = myProfile._id;
myProfile._id = 'exampleid';
db.pGitHub.save(myProfile);
db.pGitHub.remove({_id: oldId});
});
> db.pGitHub.find();
{ "_id" : ObjectId("516f204da1faf201daa15637"),
"url" : { "raw" : "https://github.com/Quatlus",
"domain" : "github.com", "canonical" : "https://github.com/quatlus" } }
{ "_id" : ObjectId("516f204da1faf201daa15638"),
"url" : { "raw" : "https://github.com/Quasii",
"domain" : "github.com", "canonical" : "https://github.com/quasii" } }
I'm using Mongo 2.4.2
Ben, your statements are correct. It's just mongo shell 2.4.2 behaves somehow different than others (server is not affected). You can use mongo shell binary from 2.4.1 for your purpose.
You can only set object IDs before they've been created. After the fact, they cannot be changed. What you're probably doing is creating new objects when you change the IDs like that.
There's more information in the MongoDB docs