How to delete data in MongoDB by create date? [duplicate]

How to delete data in MongoDB by create date? [duplicate]



This question already has an answer here:



I have a MongoDB with 380k documents in it and I want to delete all documents which are created before specific date.
Can anyone help me with writing query for this task?
Thank you.



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the answers here might help
– kmdreko
Aug 22 at 8:12





1 Answer
1



The ObjectId of the document is basically contains timestamp. So you can easily construct ObjectId from timestamp and use $lt operator just like this (python code):


ObjectId


ObjectId


$lt


from bson.objectid import ObjectId
ts = datetime.datetime(2017, 1, 1)
doc_id = ObjectId.from_datetime(ts)
result = collection.find("_id": "$lt": doc_id)

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