show tables

[Email protected] ~]# Mysql-urootMariaDB [(None)]> SHOW DATABASES;MariaDB [(none)]> QUITTo change the password for the database account:mysqladmin [-u user name] [-p[old password]] password ' new password 'Import/Restore to database:MySQL [-u user

[Email protected] ~]# Mysql-urootMariaDB [(None)]> SHOW DATABASES;MariaDB [(none)]> QUITTo change the password for the database account:mysqladmin [-u user name] [-p[old password]] password ' new password 'Import/Restore to database:MySQL [-u user

When are we going to use the copy table? For example: I now operate on a table, but I am afraid of accidentally delete data, so in the same database to build a table structure, table data is the same table for backup. If use mysqldump compare

Master and Slave server time to synchronize, the database version is best consistent, so as to avoid the function of processing, log read, log parsing and other anomalies. The following three master-slave replication settings are independent.

Create a View In MySQL, the complete syntax for creating a view is as follows: CREATE [OR REPLACE] [algorithm = {UNDEFINED | MERGE | TempTable}]VIEW view_name [(column_list)]As Select_statement[With [cascaded | Local] CHECK OPTION Its

Before installing hive, you need to configure the JDK installation and set up the Hadoop cluster. Install configuration jdk, Hadoop here is a bit, jdk1.7, Hadoop 2.6.0. system Environment, VMware opened three virtual machines. Node1 Node2 Node3

The Binlog log is used to record all statements that have updated the data or have potentially updated the data. Statement is saved as an "event," which describes the data changes. When we cause the database to fail for some reason, we can use the

One, connect MySQLFormat: mysql-h host address-u user name-P user Password1. Example 1: Connect to MySQL on this machine.First open the DOS window, and then enter the directory Mysqlbin, and then type the command mysql-uroot-p, enter after the

The last time I configured MySQL for master-slave replication or the beginning of the year, I did not expect to start using MySQL now. Words don't say much, get to the pointMaster-slave setting up the Environment:

CENTOS6-based mysql5.7.13 master-Slave Deployment (iii)Master-Slave testing Log in (main) MYSQL1[Email protected] ~]# mysql-uroot-p123456mysql> unlock tables; #解锁, locking of the table corresponding to the previous chaptermysql> use Shiyan;Mysql>

Baidu know-MySQL delete massive data MySQL database delete the optimization of large quantities of data see here, and finally look at this article, for the operation of massive data SQL deep analysis cnblogs-depth analysis drop,truncate and delete

MySQL installed in linux ubuntuThe Linux used in this article is an Ubuntu 12.04.2 LTS 64bit system, and the installation of MySQL database packages can be implemented through Apt-get.Install MySQL database in linux ubuntu#安装MySQL服务器端~ sudo apt-get

1.master/slave Hosts fileRoot LoginHosts (Master/slave)127.0.0.1 localhost10.8.1.5 MDB0110.8.1.6 SDB01CP SOFT/MYSQL-5.7.9/SUPPORT-FILES/MY-DEFAULT.CNF/ETC/MY.CNF2.master Server-idRoot LoginVi/etc/my.cnf[Mysqld]Log-bin=mysql-bin

Introduction and classification of SQL language what is SQL Structured Query Language, a language method for defining and manipulating data in a relational database by structured querying the voice.Structured Query language is a kind of

MongoDB Create Collection1. Manually Create:Syntax format:DB. CreateCollection(name, options) Parameter description: Name: The collection name to create Options: Optional parameters, specifying option for memory size and index

MySQL User managementCreate an authorized user and password? Grant all on the User1 ' identified by ' [email protected] ';The user who creates the connection management database in MySQL creates a user who can assign the appropriate permissions for

One, 1, the experimental environment: two servers to build a master-slave service to achieve synchronization2. Experimental topology:Primary server HK63 (ip:192.168.2.104)---------from server HK64 (ip:192.168.2.105)3. Experimental ideas:(1), prepare

12. Enumerate the dataThese parameters are used to enumerate the database management system information, data structure and data content.1. List all data in one clickParameter:--allUse this parameter to enumerate all the data that can be accessed.

Installing MySQL on Ubuntu is very simple and requires just a few commands to complete.1. sudo apt-get install mysql-server 2.  Apt-get Isntall mysql-client 3. sudo apt-get install Libmysqlclient-dev the installation process will prompt to set a

MySQL UninstallYum remove MySQL mysql-server mysql-libs compat-mysql51Rm-rf/var/lib/mysqlRm/etc/my.cnfSee if you have MySQL software:Rpm-qa|grep MySQLSome words continue to deleteMySQL Installation1> If you do not have a local installation package,