一句话找到MongoDB文档
要通过单词查找MongoDB文档，请使用find()和设置单词，例如-
word/i
让我们创建一个包含文档的集合-
> db.demo212.insertOne({"details":[{"Name":"John Doe"}]});
{
"acknowledged" : true,
"insertedId" : ObjectId("5e3e2c7603d395bdc21346ff")
}
> db.demo212.insertOne({"details":[{"Name":"Chris Brown"}]});
{
"acknowledged" : true,
"insertedId" : ObjectId("5e3e2c8003d395bdc2134700")
}
> db.demo212.insertOne({"details":[{"Name":"Robert doe"}]});
{
"acknowledged" : true,
"insertedId" : ObjectId("5e3e2c8a03d395bdc2134701")
}在find()方法的帮助下显示集合中的所有文档-
> db.demo212.find();
这将产生以下输出-
{ "_id" : ObjectId("5e3e2c7603d395bdc21346ff"), "details" : [ { "Name" : "John Doe" } ] }
{ "_id" : ObjectId("5e3e2c8003d395bdc2134700"), "details" : [ { "Name" : "Chris Brown" } ] }
{ "_id" : ObjectId("5e3e2c8a03d395bdc2134701"), "details" : [ { "Name" : "Robert doe" } ] }以下是通过单词查找MongoDB文档的查询-
> db.demo212.find({"details.Name":/doe/i});这将产生以下输出-
{ "_id" : ObjectId("5e3e2c7603d395bdc21346ff"), "details" : [ { "Name" : "John Doe" } ] }
{ "_id" : ObjectId("5e3e2c8a03d395bdc2134701"), "details" : [ { "Name" : "Robert doe" } ] }