查询：MySQL:SELECT * FROM userMongo:db.user.find()MySQL:SELECT * FROM user WHERE name = ‘starlee’Mongo:db.user.find({‘name’ : ‘starlee’})插入：MySQL:INSERT INOT user (`name`, `age`) values (‘starlee’,25)Mongo:db.user.insert({‘name’ : ‘starlee’, ‘age’ : 25})如果你想在MySQL里添加一个字段，你必须：ALTER TABLE user….但在MongoDB
