如何在 MongoDB 中插入布尔字段?
mongodbdatabasebig data analytics
由于布尔值只有两个值:true 和 false，因此在 MongoDB 中使用 true 或 false 关键字。让我们创建一个包含文档的集合。 −
>
db.demo215.insertOne({"EmployeeDetails":[{EmployeeName:"David","isMarried":false,"Salary":56000}]});
{
"acknowledged" : true,
"insertedId" : ObjectId("5e3e344003d395bdc2134708")
}
> db.demo215.insertOne({"EmployeeDetails":[{EmployeeName:"Bob","isMarried":true,"Salary":60000}]});
{
"acknowledged" : true,
"insertedId" : ObjectId("5e3e344d03d395bdc2134709")
}
> db.demo215.insertOne({"EmployeeDetails":[{EmployeeName:"Chris","isMarried":false,"Salary":78000}]});
{
"acknowledged" : true,
"insertedId" : ObjectId("5e3e345a03d395bdc213470a")
}
> db.demo215.insertOne({"EmployeeDetails":[{EmployeeName:"Mike","isMarried":true,"Salary":17000}]});
{
"acknowledged" : true,
"insertedId" : ObjectId("5e3e346f03d395bdc213470b")
}
借助 find() 方法显示集合中的所有文档 −
> db.demo215.find();
这将产生以下输出 −
{ "_id" : ObjectId("5e3e344003d395bdc2134708"), "EmployeeDetails" : [ { "EmployeeName" : "David", "isMarried" : false, "Salary" : 56000 } ] }
{ "_id" : ObjectId("5e3e344d03d395bdc2134709"), "EmployeeDetails" : [ { "EmployeeName" : "Bob", "isMarried" : true, "Salary" : 60000 } ] }
{ "_id" : ObjectId("5e3e345a03d395bdc213470a"), "EmployeeDetails" : [ { "EmployeeName" : "Chris", "isMarried" : false, "Salary" : 78000 } ] }
{ "_id" : ObjectId("5e3e346f03d395bdc213470b"), "EmployeeDetails" : [ { "EmployeeName" : "Mike", "isMarried" : true, "Salary" : 17000 } ] }
