Database Manual / Reference / mongosh Methods / Bulk Operations

Bulk.find.deleteOne() (mongosh method方法)

Definition定义

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.将单个文档删除操作添加到批量操作列表中。使用Bulk.find()方法指定决定删除哪个文档的条件。

Bulk.find.deleteOne() only deletes the first matching document. To remove multiple documents, see Bulk.find.delete().仅删除第一个匹配的文档。要删除多个文档，请参阅Bulk.find.delete()。

Syntax语法

The command has the following syntax:该命令具有以下语法：

Bulk.find( <filter document> ).deleteOne()

For details on the find() method see: Bulk.find()

Compatibility兼容性

This command is available in deployments hosted in the following environments:此命令在以下环境中托管的部署中可用：

  • MongoDB Atlas: The fully managed service for MongoDB deployments in the cloud：云中MongoDB部署的完全托管服务

Note

This command is supported in all MongoDB Atlas clusters. 所有MongoDB Atlas集群都支持此命令。For information on Atlas support for all commands, see Unsupported Commands.有关Atlas支持所有命令的信息，请参阅不支持的命令。

Example示例

Create the music collection:创建music集合：

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:以下示例：

  • Initializes a Bulk() operations builder.初始化Bulk()操作生成器。
  • Searches for the genre pop.搜索pop（流行音乐）类型。
  • Deletes Rick Astley, the first matching pop artist, from the collection.从集合中删除第一位匹配的流行艺术家Rick Astley。
var bulk = db.music.initializeOrderedBulkOp();
bulk.find( { "genre": "pop" } ).deleteOne();
bulk.execute()

To delete all "pop" music, use Bulk.find.delete() instead.要删除所有"pop"音乐，请使用Bulk.find.delete()。