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  1. Documentation
  2. DOCS-14825

Add a simpler example of multikey unique constraints

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      At https://docs.mongodb.com/manual/core/index-multikey/#unique-multikey-index:

      db.a.createIndex({myArray: 1}, {unique:true})
      db.a.insertOne({myArray: ['a', 'b'])
      db.a.insertOne({myArray: ['b', 'c']) // this will fail because another doc has 'b' already
      

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            Unassigned Unassigned
            nicholas.cottrell@mongodb.com Nic Cottrell
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              Created:
              Updated:
              1 year, 14 weeks, 2 days ago