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  • mongodb与sql语句对照表

    SQL Statement 
    Mongo Query Language Statement 
    CREATE TABLE USERS (a Number, b Number)
    implicit; can be done explicitly
    INSERT INTO USERS VALUES(1,1)
    db.users.insert({a:1,b:1})
    SELECT a,b FROM users
    db.users.find({}, {a:1,b:1})
    SELECT * FROM users
    db.users.find()
    SELECT * FROM users WHERE age=33
    db.users.find({age:33})
    SELECT a,b FROM users WHERE age=33
    db.users.find({age:33}, {a:1,b:1})
    SELECT * FROM users WHERE age=33 ORDER BY name
    db.users.find({age:33}).sort({name:1})
    SELECT * FROM users WHERE age>33
    db.users.find({'age':{$gt:33}})})
    SELECT * FROM users WHERE age<33
    db.users.find({'age':{$lt:33}})})
    SELECT * FROM users WHERE name LIKE "%Joe%"
    db.users.find({name:/Joe/})
    SELECT * FROM users WHERE name LIKE "Joe%"
    db.users.find({name:/^Joe/})
    SELECT * FROM users WHERE age>33 AND age<=40
    db.users.find({'age':{$gt:33,$lte:40}})})
    SELECT * FROM users ORDER BY name DESC
    db.users.find().sort({name:-1})
    CREATE INDEX myindexname ON users(name) 
    db.users.ensureIndex({name:1})
    CREATE INDEX myindexname ON users(name,ts DESC) 
    db.users.ensureIndex({name:1,ts:-1})
    SELECT * FROM users WHERE a=1 and b='q'
    db.users.find({a:1,b:'q'})
    SELECT * FROM users LIMIT 10 SKIP 20
    db.users.find().limit(10).skip(20)
    SELECT * FROM users WHERE a=1 or b=2
    db.users.find( { $or : [ { a : 1 } , { b : 2 } ] } )
    SELECT * FROM users LIMIT 1
    db.users.findOne()
    EXPLAIN SELECT * FROM users WHERE z=3
    db.users.find({z:3}).explain()
    SELECT DISTINCT last_name FROM users
    db.users.distinct('last_name')
    SELECT COUNT(*y) FROM users
    db.users.count()
    SELECT COUNT(*y) FROM users where AGE > 30
    db.users.find({age: {'$gt': 30}}).count()
    SELECT COUNT(AGE) from users
    db.users.find({age: {'$exists': true}}).count()
    UPDATE users SET a=1 WHERE b='q'
    db.users.update({b:'q'}, {$set:{a:1}}, false, true)
    UPDATE users SET a=a+2 WHERE b='q'
    db.users.update({b:'q'}, {$inc:{a:2}}, false, true)
    DELETE FROM users WHERE z="abc"
    db.users.remove({z:'abc'});
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  • 原文地址:https://www.cnblogs.com/cxd4321/p/2024722.html
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