CODEWITHSUNDEEP
pythonmongodb
pns
pns

Reputation: 423

mongodb, pymongo querying

I've been browsing through the documentation, but I can't seem to figure out a way to perform a find on my mongodb collection using only a key. For example, let's suppose this is what's inside my collection

{ 'res1': 10 }
{ 'res2: 20 }

How can I query the collection using only the key 'res1', in order to get 10 ?

Upvotes: 1

Views: 650

Answers (3)

aatifh
aatifh

Reputation: 2337

> db.collection.find({'res1': 10}) # Returns a cursor.

In your case, find_one method will do the needful.

> db.collection.find_one({'res1': 10}) # Returns a document whose value is 10

Upvotes: 1

pns
pns

Reputation: 423

Ah, I guess I'm structuring my data all wrong, I should have something like this:

{ 'name': 'res1',
  'value': 10 }

Right?

Upvotes: 2

user137673
user137673

Reputation: 1527

Not sure exaclty what you want, so... This is if you want all documents that have key res1 set:

db.collection.find({'res1': { $exists : true }})

And this is if you want all the documents that have key res1 set to 10:

db.collection.find({'res1': 10})

Upvotes: 2

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