插入張瓜趙四

db.Person.insert({"name":"張瓜","age":10})WriteResult({"nInserted":1})

db.Person.insert({"name":"趙四","age":20})WriteResult({"nInserted":1})

查詢(xún)張瓜

> db.Person.find({"name":"張瓜"}){"_id":ObjectId("5617275737a5aa2cafdb4b84"),"name":"張瓜","age":10}>

查詢(xún)所有信息

db.Person.find()

{"_id":ObjectId("5617277b37a5aa2cafdb4b85"),"name":"趙四","age":20}{"_id":ObjectId("56172d069d1af21ad1f769c7"),"name":"張瓜","age":40}

改張瓜年齡

db.Person.update({"name":"張瓜"}, {"name":"張瓜","age":40})WriteResult({"nMatched":1,"nUpserted":0,"nModified":1})

查詢(xún)張瓜此時(shí)年齡變成40

db.Person.find({"name":"張瓜"}) ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?{"_id":ObjectId("56172d069d1af21ad1f769c7"),"name":"張瓜","age":40}

刪除

db.Person.remove({"name":"張瓜"})WriteResult({"nRemoved":1})>

db.Person.find()

此時(shí)已刪除張瓜，顯示趙四信息

{"_id":ObjectId("5617277b37a5aa2cafdb4b85"),"name":"趙四","age":20}