MySQL

MongoDB

說明

mysqld

mongod

服務器守護進程

mysql

mongo

客戶端工具

mysqldump

mongodump

邏輯備份工具

mysql

mongorestore

邏輯恢復工具

db.repairDatabase()

修復數據庫

mysqldump

mongoexport

數據導出工具

source

mongoimport

數據導入工具

grant * privileges on *.* to …

Db.addUser()

Db.auth()

新建用戶并權限

show databases

show dbs

顯示庫列表

Show tables

Show collections

顯示表列表

Show slave status

Rs.status

查詢主從狀態

Create table users(a int, b int)

db.createCollection("mycoll", {capped:true,

size:100000}) 另：可隱式創建表。

創建表

Create INDEX idxname ON users(name)

db.users.ensureIndex({name:1})

創建索引

Create INDEX idxname ON users(name,ts DESC)

db.users.ensureIndex({name:1,ts:-1})

創建索引

Insert into users values(1, 1)

db.users.insert({a:1, b:1})

插入記錄

Select a, b from users

db.users.find({},{a:1, b:1})

查詢表

Select * from users

db.users.find()

查詢表

Select * from users where age=33

db.users.find({age:33})

條件查詢

Select a, b from users where age=33

db.users.find({age:33},{a:1, b:1})

條件查詢

select * from users where age<33

db.users.find({'age':{$lt:33}})

條件查詢

select * from users where age>33 and age<=40

db.users.find({'age':{$gt:33,$lte:40}})

條件查詢

select * from users where a=1 and b='q'

db.users.find({a:1,b:'q'})

條件查詢

select * from users where a=1 or b=2

db.users.find( { $or : [ { a : 1 } , { b : 2 } ] } )

條件查詢

select * from users limit 1

db.users.findOne()

條件查詢

select * from users where name like "%Joe%"

db.users.find({name:/Joe/})

模糊查詢

select * from users where name like "Joe%"

db.users.find({name:/^Joe/})

模糊查詢

select count(1) from users

Db.users.count()

獲取表記錄數

select count(1) from users where age>30

db.users.find({age: {'$gt': 30}}).count()

獲取表記錄數

select DISTINCT last_name from users

db.users.distinct('last_name')

去掉重復值

select * from users ORDER BY name

db.users.find().sort({name:-1})

排序

select * from users ORDER BY name DESC

db.users.find().sort({name:-1})

排序

EXPLAIN select * from users where z=3

db.users.find({z:3}).explain()

獲取存儲路徑

update users set a=1 where b='q'

db.users.update({b:'q'}, {$set:{a:1}}, false, true)

更新記錄

update users set a=a+2 where b='q'

db.users.update({b:'q'}, {$inc:{a:2}}, false, true)

更新記錄

delete from users where z="abc"

db.users.remove({z:'abc'})

刪除記錄

db. users.remove()

刪除所有的記錄

drop database IF EXISTS test;

use test

db.dropDatabase()

刪除數據庫

drop table IF EXISTS test;

db.mytable.drop()

刪除表/collection

db.addUser(‘test', 'test')

添加用戶

readOnly-->false

db.addUser(‘test', 'test', true)

添加用戶

readOnly-->true

db.addUser("test","test222")

更改密碼

db.system.users.remove({user:"test"})

或者db.removeUser('test')

刪除用戶

use admin

超級用戶

db.auth(‘test', ‘test')

用戶授權

db.system.users.find()

查看用戶列表

show users

查看所有用戶

db.printCollectionStats()

查看各collection的狀態

db.printReplicationInfo()

查看主從復制狀態

show profile

查看profiling

db.copyDatabase('mail_addr','mail_addr_tmp')

拷貝數據庫

db.users.dataSize()

查看collection數據的大小

db. users.totalIndexSize()

查詢索引的大小