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Status Submitted
Categories Database
Created by Guest
Created on Jun 27, 2023

RELATED FEEDBACK

Flatten arrays in group stage

Have group operators to flatten document arrays into a single one with or without repeated elements. So -> doc1 = {arr: [1,2,3,4], gr: "group"}, doc2 = {arr: [5, 6, 7, 8], gr: "group"} {$group: {_id: "$gr", arrays: {$***: "$arr"} } } => {_id: "gr", arrays: [1, 2, 3, 4, 5, 6, 7, 8]}
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  • Guest
    Oct 25, 2023
    This request is also tracked here https://jira.mongodb.org/browse/SERVER-16284
    Reply