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  1. Core Server
  2. SERVER-84489

[BP] Support group-by $min/$max with multiple buckets

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    • Icon: Task Task
    • Resolution: Duplicate
    • Icon: Major - P3 Major - P3
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    • Query Execution

    Description

      Given a simple timeseries collection:

      ./build/install/bin/mongod --setParameter featureFlagSbeFull=true --setParameter featureFlagTimeSeriesInSbe=true --setParameter logComponentVerbosity='{query: 5}'
      > db.coll.drop()
      > db.createCollection("coll", {timeseries: {timeField: "t"}})
      > db.coll.insert({t: new Date(), a: 4, b: 7, c: 5})
      > db.coll.insert({t: new Date(), a: 2, b: 9, c: 8})
      > db.coll.insert({t: new Date(), a: 3, b: 1, c: 6})
      ..
      

      The goal of this task is to get the following queries working in block-processing mode:

      > db.coll.aggregate([{$project: {a: 1}}, {$group: {_id: "$c", x: {$min : "$a"}}}])

      > db.coll.aggregate([{$project: {a: 1}}, {$group: {_id: "$c", x: {$max : "$a"}}}])

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            backlog-query-execution Backlog - Query Execution
            andrew.paroski@mongodb.com Drew Paroski
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