Reference/Operators/Variable ExpressionMongoDB Query Language (MQL) Variable Expression OperatorsVariable expression operators are used to define and reference variables in expressions.$letThe $let operator allows defining variables for use in a specified expression, enabling complex calculations and reducing code repetition.
Reference/Operators/Variable ExpressionMongoDB Query Language (MQL) Variable Expression OperatorsVariable expression operators are used to define and reference variables in expressions.$letThe $let operator allows defining variables for use in a specified expression, enabling complex calculations and reducing code repetition.