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- db.collection.count()
db.collection.count()¶
-
db.collection.
count
()¶ The
db.collection.count()
method is a shell wrapper that returns the count of documents that would match afind()
query; i.e.,db.collection.count()
method is equivalent to:This operation does not actually perform the
find()
; instead, the operation counts the results that would be returned by thefind()
.The
db.collection.count()
method can accept the following argument:Parameters: - query (document) – Specifies the selection query criteria.
Consider the following examples of the
db.collection.count()
methodCount the number of all documents in the
orders
collection:The query is equivalent to the following:
Count the number of the documents in the
orders
collection with the fieldord_dt
greater thannew Date('01/01/2012')
:The query is equivalent to the following:
See also