标签：rtm insert class tno 数据 EDA comm 1.2 manage
1、说明
1. 插入文档: insert 如果插入数据的时候，collection还不存在，自动创建集合
2. insertOne: 插入一条数据
3. insertMany: 接收数组，插入多条文档
#1、插入单条数据 db.student1.insertOne({_id:"stu001","name":"Tom","age":25,grade:{"chinese":80,"math":90,"english":88}}) #2、插入多条数据 db.student1.insertMany([ {_id:"stu002","name":"Mary","age":23,grade:{"chinese":80,"math":90}}, {_id:"stu003","name":"Mike","age":23,grade:{"chinese":81,"math":90,"english":88}} ]);
1、创建测试数据
db.emp.insert( [ {_id:7369,ename:‘SMITH‘ ,job:‘CLERK‘ ,mgr:7902,hiredate:‘17-12-80‘,sal:800,comm:0,deptno:20}, {_id:7499,ename:‘ALLEN‘ ,job:‘SALESMAN‘ ,mgr:7698,hiredate:‘20-02-81‘,sal:1600,comm:300 ,deptno:30}, {_id:7521,ename:‘WARD‘ ,job:‘SALESMAN‘ ,mgr:7698,hiredate:‘22-02-81‘,sal:1250,comm:500 ,deptno:30}, {_id:7566,ename:‘JONES‘ ,job:‘MANAGER‘ ,mgr:7839,hiredate:‘02-04-81‘,sal:2975,comm:0,deptno:20}, {_id:7654,ename:‘MARTIN‘,job:‘SALESMAN‘ ,mgr:7698,hiredate:‘28-09-81‘,sal:1250,comm:1400,deptno:30}, {_id:7698,ename:‘BLAKE‘ ,job:‘MANAGER‘ ,mgr:7839,hiredate:‘01-05-81‘,sal:2850,comm:0,deptno:30}, {_id:7782,ename:‘CLARK‘ ,job:‘MANAGER‘ ,mgr:7839,hiredate:‘09-06-81‘,sal:2450,comm:0,deptno:10}, {_id:7788,ename:‘SCOTT‘ ,job:‘ANALYST‘ ,mgr:7566,hiredate:‘19-04-87‘,sal:3000,comm:0,deptno:20}, {_id:7839,ename:‘KING‘ ,job:‘PRESIDENT‘,mgr:0,hiredate:‘17-11-81‘,sal:5000,comm:0,deptno:10}, {_id:7844,ename:‘TURNER‘,job:‘SALESMAN‘ ,mgr:7698,hiredate:‘08-09-81‘,sal:1500,comm:0,deptno:30}, {_id:7876,ename:‘ADAMS‘ ,job:‘CLERK‘ ,mgr:7788,hiredate:‘23-05-87‘,sal:1100,comm:0,deptno:20}, {_id:7900,ename:‘JAMES‘ ,job:‘CLERK‘ ,mgr:7698,hiredate:‘03-12-81‘,sal:950,comm:0,deptno:30}, {_id:7902,ename:‘FORD‘ ,job:‘ANALYST‘ ,mgr:7566,hiredate:‘03-12-81‘,sal:3000,comm:0,deptno:20}, {_id:7934,ename:‘MILLER‘,job:‘CLERK‘ ,mgr:7782,hiredate:‘23-01-82‘,sal:1300,comm:0,deptno:10} ] );
2、基本查询
#1、查询所有的员工信息 db.emp.find() #2、查询职位值经理的员工 db.emp.find({"job":"MANAGER"}) #3、操作符：$in和$or #查询职位是MANAGER或者是CLERK员工信息 db.emp.find({"job":{$in:["MANAGER","CLERK"]}}) db.emp.find({$or:[{"job":"MANAGER"},{"job":"CLERK"}]}) #4、查询10号部门工资大于2000的员工 db.emp.find({"sal":{$gt:2000},"deptno":10})
3、查询数组的文档
111111111111111111111111
标签：rtm insert class tno 数据 EDA comm 1.2 manage
原文地址：https://www.cnblogs.com/xiaonq/p/10358669.html
