摘要：上行：SQL 操作语句下行：Mongo 操作语句CREATE TABLE USERS (a Number, b Number)db.createCollection("mycoll")INSERT INTO USERS VALUES(1,1)db.users.insert({a:1,b:1})SELECT a,b FROM usersdb.users.find({}, {a:1,b:1})SELECT * FROM usersdb.users.find()SELECT * FROM users WHERE age=33db.users.find({age:33})SELEC 阅读全文