distinct()

MongoDB Driver Function Reference

Retrieves distinct field values from documents matching the filter criteria from a collection.
More information can be found in the corresponding entry of the MongoDB Manual.

<collection>.distinct(<field>[, <filter>[, <options>]])

Arguments

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

Options

{ maxTime: <long>, collation: <document> }

maxTime		Sets the maximum operation time (in milliseconds).
collation		A document specifying the collation.

Return Value

Returns a result set (cursor).

Example

db.employees.distinct("age", { salary: { $gt: 700000 }});

Returns a distinct list of ages from the employee collection with a salary greater than 700000.

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