Bulk.find.deleteOne()
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Definition
Bulk.find.deleteOne()-
Adds a single document remove operation to a bulk operations list. Use the
Bulk.find()method to specify the condition that determines which document to remove.Bulk.find.deleteOne()only deletes the first matching document. To remove multiple documents, seeBulk.find.delete().
Syntax
The command has the following syntax:
Bulk.find( <filter document> ).deleteOne()
For details on the find() method see: Bulk.find()
Example
Create the music collection:
db.music.insertMany( [ { artist: "DOA", genre: "punk" }, { artist: "Rick Astley", genre: "pop" }, { artist: "Black Flag", genre: "punk" }, { artist: "Justin Bieber", genre: "pop" } ] )
The following example:
-
Initializes a
Bulk()operations builder. -
Searches for the genre
pop. -
Deletes
Rick Astley, the first matching pop artist, from the collection.
var bulk = db.music.initializeOrderedBulkOp(); bulk.find( { "genre": "pop" } ).deleteOne(); bulk.execute()
To delete all "pop" music, use Bulk.find.delete() instead.