Interface Let

Hierarchy

Let

Index

Properties

Properties

$let

$let: {
    in: any;
    vars: {
        [key: string]: Expression;
    };
}

Binds variables for use in the specified expression, and returns the result of the expression.

Type declaration

in: any

The expression to evaluate.
vars: {
[key: string]: Expression;
}

Assignment block for the variables accessible in the in expression. To assign a variable, specify a string for the variable name and assign a valid expression for the value.
- [key: string]: Expression

Version

5.0

See

https://www.mongodb.com/docs/manual/reference/operator/aggregation/let/#mongodb-expression-exp.-let

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