MySQL

1 1, enter the INFORMATION_SCHEMA database (information that holds other databases)2 UseInformation_schema;3 4 2, querying the size of all data:5 SelectConcatround(sum(Data_length/1024x768/1024x768),2),'MB') asData fromInformation_schema.tables;6 7

First, the Backup objectDataConfiguration fileCode: Stored procedures, stored functions, triggersConfiguration related to ReplicationBinary log filesSecond, backup tools Mysqldump: Logical Backup tool InnoDB Hot Spares, MyISAM Win Bei,

1. Download MySQLdb: Https://sourceforge.net/projects/mysql-python/?source=typ_redirect2. InstallationOne step in the installation is to choose the installation location of Python, because my Python is installed on the D drive, but the default is

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

MySQL provides two functions:From_unixtime (time_stamp), convert timestamp to date unix_timestamp (date) converts the specified date or date string to a timestampIf you want to check the records of orders for the day:[Plain] Select Count(*

Python connects MySQL to connector there are many, we choose MYSQLDB Let Python support MySQLdb module #pip2.7 Install Mysql-pythonSee if the modules available with python2.7 are present

Build table:CREATE TABLE ' sj_projects ' (' id ' int (one) not NULL auto_increment,' title ' varchar (255) Not NULL DEFAULT ' COMMENT ' project name ',' platform_id ' int (one) not NULL DEFAULT ' 0 ' COMMENT ' platform ID ',' unique_id ' varchar (255

Login-->mysql-uroot-p123456 after installationShow all databases-->show databases;Create a new database-->create database name;Delete database-->drop database name;Use database-->use datsbase database name;Creating Tables-->create table name ([]

Late at night, the reason to write this article is really because a lot of time today wasted on this MySQL installation, originally very simple process, but almost wasted a day of time.First, Mysql installation and startupPreparatory work(1) Create

CentOS 7 's Yum source does not appear to be properly installed when MySQL mysql-sever file, need to go to the official web download # wget http://dev.mysql.com/get/mysql-community-release-el7-5.noarch.rpm# RPM-IVH

1 , query loglog={on| OFF}: Log information for all statements is logged in the General query log file (General_log);log_output={table| file| None},table and file can appear at the same time, separated by commas.General_log: Whether query logging is

System environment:Red Hat Enterprise Linux Server 61. Stop mysqld service[[Email protected] huage]# service mysqld stop2. start MySQL in a way that skips authorization [Email protected] huage]# Mysqld_safe--skip-grant-tables &3. Log in as root user

First, install Nginx:1, enter the Nginx official website, choose Download, choose Linux Pre-compiled version, according to their own system version of editing/etc/yum.repos.d/nginx.repo; my system is centOs7.0, so the file content is as

Install MySQL, prompt after successful installation, start service, prompt error 1067Previously tip: MySQL installation files and configuration files are not placed under the program file folder.Workaround: Place the My.ini file cut under the

The version of MySQL I am applying is: 5.6.22MySQL5.5 later uses the InnoDB storage engine by default, where InnoDB and BDB provide transaction-safe tables, and other storage engines are non-transactional security tables. you can specify the engine

First login mysql:mysql-uroot-proot-p3306-h127.0.0.1View all libraries: show databases;Enter a library: use database;The library where the display is located: Select Database ();To start a data table operation:1, create a data table: Creating Table

Create a database using MysqladminWith a normal user, you may need specific permissions to create or delete a MySQL database.So here we are using the root user login, the root user has the highest privileges, you can use the MySQL mysqladmin command

[email protected] ~]# Yum install libaio-devel-y #安装共享库[Email protected] ~]# wget http://mirrors.sohu.com/mysql/My ... ux2.6-x86_64.tar.gz #下载MySQL二进制包[Email protected] ~]# tar xf mysql-5.5.48-linux2.6-x86_64.tar.gz #解压二进制包[Email protected] ~]# mv

Will install MySQL, will be a few SQL statements, will JDBC, hibernate configuration, thought will be MySQL, in recent days the interview was asked to MySQL problem, shame, systematic study.One of the MySQL optimizations, select the appropriate

Connection and shutdown of 1.mysql databasesTo connect to a database:Mysql-h Server host address-u user name-p passwordTo close the connection:Enter exit or quit at any time2. Create a new user and authorizeGrant permissions on the database. Data