AWS DoucmentDB is not supporting the $lookup operator, how to write a Join Query in DocumentDB, is there any alternative of $lookup operator in DocumentDB?
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Left-outer joins (or correlated subqueries) are written in MongoDB using the $lookup operator.
[Updated 10/16] Amazon DocumentDB now supports $lookup: https://aws.amazon.com/about-aws/whats-new/2019/10/amazon-documentdb-add-additional-aggregation-pipeline-capabilities/
You can find the most up-to-date list of supported API/stages/operators here:https://docs.aws.amazon.com/documentdb/latest/developerguide/mongo-apis.html
Also, please check the following for recent launches: https://aws.amazon.com/documentdb/resources/

Joseph Idziorek
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