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Module "operators/pipeline/lookup"

Index

Functions

Functions

$lookup

  • Performs a left outer join to another collection in the same database to filter in documents from the “joined” collection for processing.

    Parameters

    • collection: Iterator
    • expr: { as: string; foreignField: string; from: string | Collection; localField: string }
      • as: string
      • foreignField: string
      • from: string | Collection
      • localField: string
    • Optional options: Options

    Returns Iterator

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