mongod --dbpath "c:\mymongodb" --logpath "c:\mymongodb\logs.txt" --install --serviceName "MongoDB"
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Relation
Database
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MongoDB
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Database
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Mongo Instance
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Table
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Collection
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Row
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Document
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Column ,Field
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Field
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Index
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Index
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Cursor
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Cursor
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Schema
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-
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SQL
STATEMENT
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MONGO
QUERY LANGUAGE STATEMENT
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CREATE TABLE USERS (a Number, b Number)
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db.createCollection("mycoll")
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INSERT INTO USERS VALUES(1,1)
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db.users.insert({a:1,b:1})
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SELECT a,b FROM users
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db.users.find({}, {a:1,b:1})
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SELECT * FROM users
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db.users.find()
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SELECT * FROM users WHERE age=33
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db.users.find({age:33})
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SELECT a,b FROM users WHERE age=33
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db.users.find({age:33}, {a:1,b:1})
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SELECT * FROM users WHERE age=33 ORDER BY name
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db.users.find({age:33}).sort({name:1})
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SELECT * FROM users WHERE age>33
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db.users.find({'age':{$gt:33}})})
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SELECT * FROM users WHERE age<33
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db.users.find({'age':{$lt:33}})})
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SELECT * FROM users WHERE name LIKE
"%Joe%"
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db.users.find({name:/Joe/})
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SELECT * FROM users WHERE name LIKE "Joe%"
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db.users.find({name:/^Joe/})
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SELECT * FROM users WHERE age>33 AND age<=40
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db.users.find({'age':{$gt:33,$lte:40}})})
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SELECT * FROM users ORDER BY name DESC
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db.users.find().sort({name:-1})
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SELECT * FROM users WHERE a=1 and b='q'
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db.users.find({a:1,b:'q'})
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SELECT * FROM users LIMIT 10 SKIP 20
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db.users.find().limit(10).skip(20)
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SELECT * FROM users WHERE a=1 or
b=2
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db.users.find( { $or : [ { a : 1 } ,
{ b : 2 } ]
} )
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SELECT * FROM users LIMIT 1
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db.users.findOne()
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SELECT DISTINCT last_name FROM users
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db.users.distinct('last_name')
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SELECT COUNT(*y)
FROM users
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db.users.count()
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SELECT COUNT(*y)
FROM users where AGE > 30
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db.users.find({age:
{'$gt': 30}}).count()
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SELECT COUNT(AGE)
from users
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db.users.find(
{age: {'$exists': true}}).count()
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CREATE INDEX myindexname ON users(name)
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db.users.ensureIndex({name:1})
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CREATE INDEX myindexname ON users(name,ts DESC)
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db.users.ensureIndex({name:1,ts:-1})
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EXPLAIN SELECT * FROM users WHERE z=3
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db.users.find({z:3}).explain()
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UPDATE users SET a=1
WHERE b='q'
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db.users.update({b:'q'},
{$set:{a:1}}, false, true)
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UPDATE users SET a=a+2
WHERE b='q'
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db.users.update({b:'q'},
{$inc:{a:2}}, false, true)
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DELETE FROM users WHERE z="abc"
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db.users.remove({z:'abc'});
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