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Wernfried

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  1. Add support for db.exists() and collections.exists()

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    under review  ·  2 comments  ·  MongoDB Shell » Commands  ·  Admin →
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    Wernfried commented  · 

    Can be done with a single command:

    db.exists() -> db.adminCommand( { listDatabases: 1 , filter: { name: 'db' } } ).databases.length > 0

    and

    collections.exists() -> db.getCollectionNames().includes('collections')

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