countDocuments()

MongoDB Driver Function Reference

Returns the number of documents matching the filter criteria in a collection.

db.<collection>.countDocuments([<filter>[, <options>]])

Arguments

<collection>		The target collection
<filter>		A filter expression using query operators
<options>		A BOSN document specifying options

Options

{ maxTime: <long>, limit: <long>, skip: <long>, collation: <document>, hint: <document>, }

limit		The maximum number of documents to count.
maxTime		The maximum amount of time to allow the count to run.
skip		The number of documents to skip before counting.
collation		A document specifying the collation
hint		A document specifying a hint

Return Value

Returns a result set (cursor).

Example

db.employees.countDocuments({ salary: { $gt: 700000 }});

Returns the number of documents where the salary value is greater than 700000.