| 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}) |
创建表,另：可隐式创建表。 |
| 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 |
| delete from tb1; |
db. users.remove() |
删除所有的记录 |
| drop database IF EXISTS test; |
use testdb.dropDatabase() |
删除数据库 |
| drop table IF EXISTS test; |
db.mytable.drop() |
删除表/collection |
| grant xxx |
db.addUser(‘test’, ’test’) |
添加用户readOnly–>false |
| - |
db.addUser(‘test’, ’test’, true) |
添加用户readOnly–>true |
| set password for xx@xx = password(‘’); |
db.addUser(“test”,”test222”) |
更改密码 |
| drop user xx@xx; |
db.system.users.remove({user:”test”})或者db.removeUser(‘test’) |
删除用户 |
| root |
use admin |
超级用户 |
| grant |
db.auth(‘test’, ‘test’) |
用户授权 |
| select * from mysql.user |
db.system.users.find() |
查看用户列表 |
| select * from mysql.user |
show users |
查看所有用户 |
| show table status from t; |
db.printCollectionStats() |
查看各collection的状态 |
| show slave status; |
db.printReplicationInfo() |
查看主从复制状态 |
| show profiles; |
show profile |
查看profiling |
| - |
db.copyDatabase(‘mail_addr’,’mail_addr_tmp’) |
拷贝数据库 |
| 查看information_schema |
db.users.dataSize() |
查看collection数据的大小 |
| 查看information_schema |
db. users.totalIndexSize() |
查询索引的大小 |
