Question

How can I query for multiple documents using their _id

i.e., if i have an array of ids of documents in a certain collection, how can i get all of these documents at once in a single operation

can i use something like:

db.collection.find({_id:[id1,id2,id3]})

and then mongodb return 3 documents of ids id1,id2,id3

is that possible, and if so, what is the exact syntax , or method , and is there any advices or precautions to take into consideration?

Answer 1

Just use $in operator as MongoDB doc says:

db.collection.find( { field : { $in : array } } );