> db.test.find()
{ "_id" : ObjectId("5c08e86cbfd9756856063341"), "name" : "xiaobin", "age" : 27, "gender" : "male" }
{ "_id" : ObjectId("5c09ddb5ca83e5589d6754ef"), "name" : "xiaojun", "age" : 30, "gender" : "male" }
{ "_id" : ObjectId("5c09e4fcca83e5589d6754f1"), "name" : "xiaobin" }how to delete the third record, and the first will be deleted if the condition is {name:"xiaobin"}.
is deleted if {_ id:'5c09dde0ca83e5589d6754f1}
_ id is the primary key generated by mongoDB by default , delete
Project.updateOne(r, { $pull: { thunder2: { files: { _id: "5ab362d446f15936bcea7dd3" } } } }, function(err, data) { if (err) { res.send("") } else { ...
the previous command is as follows: mongod --logpath C: mydatabase logs.txt --logappend --dbpath C: mydatabase --serviceName MongoDB --install however, there is no prompt on the command line after entering the carriage enter, and the service has ...
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ip and port are OK on the server! bind_ip 0.0.0.0 ip ask the boss to have a look. No, no, no. It s okay to pay for an answer! ...
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You can stream query results from MongoDB. You need to call the Query-sharpcursor () function to return an instance of QueryCursor. Please do not translate directly. I want to know what cursor is and what stream is, and why I use it, thank you! ...
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