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Find when the keys are unkown in mongodb


Find when the keys are unkown in mongodb

By : Venkat
Date : November 21 2020, 04:01 AM
wish helps you You can use below aggregation using $objectToArray in mongodb 3.4 and above
code :
db.collection.aggregate([
  { "$addFields": {
    "field": { "$objectToArray": "$$ROOT" }
  }},
  { "$match": { "field.v.email": "abc@gmail.com" }},
  { "$project": { "field": 0 }}
])


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Using find() to search for nested keys in MongoDB

Using find() to search for nested keys in MongoDB


By : Manu
Date : March 29 2020, 07:55 AM
To fix the issue you can do You have to use dot notation to get what you're looking for. It would look like:
code :
db.collections.find({"headers.server":"gws"})
find documents in MongoDB with set of keys

find documents in MongoDB with set of keys


By : Sebastian
Date : March 29 2020, 07:55 AM
I hope this helps you . The best way would be to to store the relation the "other way" around:
A:
code :
 {
   _id: ObjectId
   name : String
 }
 {
   _id: ObjectId
   data : String 
   info : [String]
   itemA: ObjectId
 }
db.B.find( { itemA: … } );
 {
   _id: ObjectId
   data : String 
   info : [String]
   itemA: [ ObjectId, ObjectId, … ]
 }
MongoDB -- Find duplicate documents by multiple keys

MongoDB -- Find duplicate documents by multiple keys


By : Harpreet Singh
Date : March 29 2020, 07:55 AM
I wish this help you Is it as simple as grouping by multiple keys or did I misunderstand your question?
code :
...
{ $group: { _id: { id: "$_id", comment: "$comment" }, count: { $sum: 1 } } },
{ $match: { count: { $gte: 2 } } },
...
How to extract values from json in jmeter when the keys are unkown?

How to extract values from json in jmeter when the keys are unkown?


By : user405346
Date : March 29 2020, 07:55 AM
With these it helps I have a json response as, { 'sadasd123242' : 'asdadada122dfsfs', 'dadsadaskljk' : 'adasdasdasdsadds' } I want to extract the keys from the response in jmeter test using the JSON extractor. I am unable to do this as I do not know the keys in the response. How do I get the keys ? , Assuming you have the response in the following format:
code :
{
  "data": {
    "assets": {
      "sadsad12dwqqwe": "asda1212312",
      "asdasd1213123": "asdas2131231"
    }
  }
}
new groovy.json.JsonSlurper().parse(prev.getResponseData()).data.assets.eachWithIndex{ def node, int idx ->
    log.info('Key ' + idx + '=' + node.getKey())
    vars.put('key_' + idx, node.getKey())
}
- `${key_1}`
- `${key_2}`
- etc.
mongodb find oldest date of three keys in each document

mongodb find oldest date of three keys in each document


By : Mateusz Rzepkowski
Date : March 29 2020, 07:55 AM
wish helps you You can use $min and $ifNull operators to get oldest date specify new Date() as default value if any of those dates does not exist:
code :
db.col.aggregate([
    {
        $project: {
            oldest: {
                $min: [
                    { $ifNull: [ "$lostDate", new Date() ] },
                    { $ifNull: [ "$soldDate", new Date() ] },
                    { $ifNull: [ "$assignedDate", new Date() ] },
                ]
            }
        }
    }
])
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