MySQL

MongoDB

说明

mysqld

mongod

服务器守护进程

mysql

mongo

客户端工具

mysqldump

mongodump

逻辑备份工具

mysql

mongorestore

逻辑恢复工具

db.repairDatabase()

修复数据库

mysqldump

mongoexport

数据导出工具

source

mongoimport

数据导入工具

grant * privileges on *.* to …

Db.addUser()

Db.auth()

新建用户并权限

show databases

show dbs

显示库列表

Show tables

Show collections

显示表列表

Show slave status

Rs.status

查询主从状态

Create table users(a int, b int)

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

size:100000}) 另：可隐式创建表。

创建表

Create INDEX idxname ON users(name)

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

创建索引

Create INDEX idxname ON users(name,ts DESC)

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

创建索引

Insert into users values(1, 1)

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

插入记录

Select a, b from users

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

查询表

Select * from users

db.users.find()

查询表

Select * from users where age=33

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

条件查询

Select a, b from users where age=33

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

条件查询

select * from users where age<33

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

条件查询

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

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

条件查询

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

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

条件查询

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

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

条件查询

select * from users limit 1

db.users.findOne()

条件查询

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

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

模糊查询

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

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

模糊查询

select count(1) from users

Db.users.count()

获取表记录数

select count(1) from users where age>30

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

获取表记录数

select DISTINCT last_name from users

db.users.distinct(\'last_name\')

去掉重复值

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()

获取存储路径

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

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

更新记录

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

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

更新记录

delete from users where z=\"abc\"

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

删除记录

db. users.remove()

删除所有的记录

drop database IF EXISTS test;

use test

db.dropDatabase()

删除数据库

drop table IF EXISTS test;

db.mytable.drop()

删除表/collection

db.addUser(‘test\', \'test\')

添加用户

readOnly-->false

db.addUser(‘test\', \'test\', true)

添加用户

readOnly-->true

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

更改密码

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

或者db.removeUser(\'test\')

删除用户

use admin

超级用户

db.auth(‘test\', ‘test\')

用户授权

db.system.users.find()

查看用户列表

show users

查看所有用户

db.printCollectionStats()

查看各collection的状态

db.printReplicationInfo()

查看主从复制状态

show profile

查看profiling

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

拷贝数据库

db.users.dataSize()

查看collection数据的大小

db. users.totalIndexSize()

查询索引的大小