Logical Query Predicate Operators

Logical operators return data based on boolean logic (and, or, and nor).

Name	Description
`$and`	Joins query clauses with a logical `AND` and returns documents that match the conditions of all clauses.
`$nor`	Joins query clauses with a logical `NOR` and returns all documents that fail to match all clauses.
`$not`	Inverts the effect of a query predicate and returns documents that do not match the query predicate.
`$or`	Joins query clauses with a logical `OR` and returns all documents that match at least one clause.

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