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mongodb操作与mysql对比 zz 百度文库

2015-11-25 08:52 633 查看
MySQL

MongoDB

说明

mysqldmongod服务器守护进程
mysqlmongo客户端工具
mysqldumpmongodump逻辑备份工具
mysqlmongorestore逻辑恢复工具
db.repairDatabase()修复数据库
mysqldumpmongoexport数据导出工具
sourcemongoimport数据导入工具
grant * privileges on *.* to …Db.addUser()Db.auth()新建用户并权限
show databasesshow dbs显示库列表
Show tablesShow collections显示表列表
Show slave statusRs.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 usersdb.users.find({},{a:1, b:1})查询表
Select * from usersdb.users.find()查询表
Select * from users where age=33db.users.find({age:33})条件查询
Select a, b from users where age=33db.users.find({age:33},{a:1, b:1})条件查询
select * from users where age<33db.users.find({‘age’:{$lt:33}})条件查询
select * from users where age>33 and age<=40db.users.find({‘age’:{$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=2db.users.find( { $or : [ { a : 1 } , { b : 2 } ] } )条件查询
select * from users limit 1db.users.findOne()条件查询
select * from users where name like “%Joe%”db.users.find({name:/Joe/})模糊查询
select * from users where name like “Joe%”db.users.find({name:/^Joe/})模糊查询
select count(1) from usersDb.users.count()获取表记录数
select count(1) from users where age>30db.users.find({age: {‘$gt’: 30}}).count()获取表记录数
select DISTINCT last_name from usersdb.users.distinct(‘last_name’)去掉重复值
select * from users ORDER BY namedb.users.find().sort({name:-1})排序
select * from users ORDER BY name DESCdb.users.find().sort({name:-1})排序
EXPLAIN select * from users where z=3db.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 testdb.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.storageSize()查看collection分配空间的大小
db.users.totalIndexSize()查看collection数据+索引的大小
db.users.dataSize()查看collection索引的大小
db.dropDatabase()删除当前数据库
db.users.ensureIndex({loc : “2d”})设置地理坐标索引
db.users.find({loc : {$near : [72,82]})查找附近地址
db.stats()查看数据库的详细信息
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