🔴 #16: MongoDB Logical Query Operators using Mongoose and Node(Express JS) in Hindi in 2020
Channel: Thapa Technical
Date: 2020-11-03

Welcome to, MongoDB – Logical Query Operators ❤

MongoDB supports logical query operators. These operators are used for filtering the data and getting precise results based on the given conditions. The following table contains the comparison query operators:

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OPERATOR DESCRIPTION
$and It is used to join query clauses with a logical AND and return all documents that match the given conditions of both clauses.
$or It is used to join query clauses with a logical OR and return all documents that match the given conditions of either clause.
$not It is used to invert the effect of the query expressions and return documents that do not match the query expression.
$nor It is used to join query clauses with a logical NOR and return all documents that fail to match both clauses.

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