• Reference >
• Query, Update and Projection Operators >
• Element Query Operators

Element Query Operators

Name	Description
$exists	Matches documents that have the specified field.
$mod	Performs a modulo operation on the value of a field and selects documents with a specified result.
$type	Selects documents if a field is of the specified type.

• $exists
• $mod
• $type

• ←   $nor
• $exists  →