deleteMany() 语法格式 db.collection.deleteMany( <filter>, { writeConcern: <document>, collation: <document> } ) remove() 语法格式 语法一 db.collection.remove( <query>, <justOne> ) 语法二 db.collection.remove( <query>, { justOne: <boolean>, writeConcern: <document>, collation: <document...
Aquery filter documentcan use thequery operatorsto specify conditions in the following form: {<field1>:{<operator1>:<value1>},...} 删除的行为表现 索引 Delete operations do not drop indexes, even if deleting all documents from a collection. 原子性 MongoDB中所有的写操作在单一文档层级上是原子...
A query filter document can use the query operators to specify conditions in the following form: { <field1>: { <operator1>: <value1> }, ... } 删除的行为表现 索引 Delete operations do not drop indexes, even if deleting all documents from a collection. 原子性 MongoDB中所有的写操作在单...
官网文档https://www.mongodb.com/docs/manual/tutorial/query-embedded-documents/#match-an-embedded-nested-document 测试数据 db.inventory.insertMany([{item:"journal",qty:25,size:{h:14,w:21,uom:"cm"},status:"A"},{item:"notebook",qty:50,size:{h:8.5,w:11,uom:"in"},status:"A"},{it...
To delete a single document, use the deleteOne endpoint. Use the filter property in the request body to specify the search criteria. If more than one document matches the criteria, only the first match will be deleted. Delete Many Documents You can use deleteMany to delete multiple documents...
To delete a single document, use the deleteOne endpoint. Use the filter property in the request body to specify the search criteria. If more than one document matches the criteria, only the first match will be deleted. Delete Many Documents You can use deleteMany to delete multiple documents...
Command 为除 insert、update、delete、query 以外命令的总称。 请求量 总请求量 node_success 次 集群所有请求的次数。 插入请求 node_inserts 次 集群收到的插入请求的次数。插入请求是按实际插入行数统计,例如 insertMany() 实际插入10条记录,则监控会统计10次插入请求。 读请求 node_reads 次 集群收到的读...
delete: <collection>, deletes: [ { q : <query>, limit : <integer>, collation: <document>, hint: <document|string> }, ... ], comment: <any>, let: <document>, // Added in MongoDB 5.0 ordered: <boolean>, writeConcern: { <write concern> }, ...
语法格式如下: db.collection.update( <query>, <update>, { upsert: <boolean>, multi: <boolean>, writeConcern: <document> } ) 参数说明:对比update db1.t1 set name='EGON',sex='Male' where name='egon' and age=18; query : 相当于where条件。 update : update的对象和一些更新的操作符(如$...
Delete specific documents in thecometscollection. The following example illustrates using a query filter to delete documents where theirorbitalPeriodis greater than 5 and less than 85. CrudDelete.cs //delete code goeshere varresult = coll.DeleteMany(x => x.OrbitalPeriod >5&& x.OrbitalPeriod <85...