MongoDB简单查询语句
时间：2021-07-01 10:21:17
帮助过：4人阅读
db.users.find({"username" : "joe", "age" : 27}) select * from users where "username" = "joe" and age = 27
db.users.find({}, {"username" : 1, "email" : 1}) select username, email from users
db.users.find({}, {"username" : 1, "_id" : 0})
db.users.find({"age" : {"$gte" : 18, "$lte" : 30}}) select * from users where age >=18 and age <= 30
db.users.find({"username" : {"$ne" : "joe"}}) select * from users where username <> "joe"
db.users.find({"ticket_no" : {"$in" : [725, 542, 390]}}) select * from users where ticket_no in (725, 542, 390)
db.users.find({"ticket_no" : {"$nin" : [725, 542, 390]}}) select * from users where ticket_no not in (725, 542, 390)
db.users.find({"$or" : [{"ticket_no" : 725}, {"winner" : true}]}) select * form users where ticket_no = 725 or winner = true
db.users.find({"id_num" : {"$mod" : [5, 1]}}) select * from users where (id_num mod 5) = 1
db.users.find({"$not": {"age" : 27}}) select * from users where not (age = 27)
db.users.find({"username" : {"$in" : [null], "$exists" : true}}) select * from users where username is null
db.users.find({"name" : /joey?/i})
db.food.find({fruit : {$all : ["apple", "banana"]}})
db.food.find({"fruit.2" : "peach"})
db.food.find({"fruit" : {"$size" : 3}})
db.users.findOne(criteria, {"comments" : {"$slice" : 10}})
db.people.find({"name.first" : "Joe", "name.last" : "Schmoe"})
db.blog.find({"comments" : {"$elemMatch" : {"author" : "joe", "score" : {"$gte" : 5}}}})
db.foo.find({"$where" : "this.x + this.y == 10"})
db.foo.find({"$where" : "function() { return this.x + this.y == 10; }"})
db.foo.find().sort({"x" : 1}).limit(1).skip(10);
MongoDB简单查询语句
标签：ast 表达式 个数 pcre _id mit value each ODB
