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mongodb: will limit() increase query speed?
    Is db.inventory.find().limit(10) faster than db.inventory.find()? I have millions of records in mongodb, I ... top 10 records in some orders. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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mongodb: Multikey indexing structure?
    I'm finding it hard to understand how exactly indexing is done on multikeys in mongodb. This is what I read ... understand! Thanks, in advance. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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mongodb: how can I see the execution time for the aggregate command?
    I execute the follow mongodb command in mongo shell db.coll.aggregate(...) and i see the list of ... explain method for aggregation queries. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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