MySQL

This article mainly introduces the MySQL error 1366-incorrect integer value solution, this article by modifying the default value of the field to solve, the need for friends can refer to the Because the database server has a lot of databases and

#一. OverviewThe > database locking mechanism simply means that the database is designed to ensure the consistency of the data and to make the various shared resources be ordered by concurrent access. For any kind of database need to have a

Since the CENTOS7 default database is MARIABD, installing MySQL via RPM requires uninstalling the original MARIABD, and then downloading all the dependencies is cumbersome and error-prone. Install it in Yum mode. Yum is actually an upgrade of RPM.

Since MySQL was not used for some time, I forgot the root login password.Decide to reset the password and search for help.Reference

Install LEMP (Linux, Nginx, MySQL and PHP) Stack on Ubuntu Linux 14.04 LTSNginx InstallationNginx is one of the robust Web servers in Linux world. Nginx is a free, open source, high performance HTTP server and reverse proxies, as weell as an

InnoDB How to implement a row lockInnoDB row locks are implemented by locking the index entries on the index, which is different from Oracle, which is achieved by locking the corresponding data rows in the data block. InnoDB This type of row lock

Both logical and physical backups are strongly dependent on FTWRL (Flush Table with Read Lock) in order to obtain consistency sites. This lock is very lethal, because the whole database is essentially unable to provide write service to the time the

Open Apache First, enter the localhost return on the browser if the screen is displayed: It works! Such as:This means your Apache is open.To configure Apache under window:1. Locate the http.conf file in the Apache installation directory to open this

When you previously backed up Binlog, the backup was compressed locally and then sent to the remote server. But there is a certain risk, because the backup of the log is periodic, if in a certain period, the server down, the hard disk is damaged, it

Like most relational databases, log files are an important part of the MySQL database. MySQL has several different log files, usually including error log files, binary logs, generic logs, slow query logs, and so on. These logs can help us define

Https://yq.aliyun.com/articles/11210?spm=0.0.0.0.HpobXF1. Using the-r/-i parameterWith the Mysqladmin extended-status command, you get all the MySQL performance metrics, the output of show global status, but since most of these metrics are

Using MySQL will of course have access to the MySQL storage engine, which you will see when creating a new database and creating a new data table.MySQL default storage engine is MyISAM, other commonly used is innodb.What kind of storage engine is

Transferred from: http://www.cnblogs.com/xiaoluo501395377/archive/2013/04/07/3003278.htmlIf you want to do a Java EE development on Linux, first build the Java EE development environment, including the JDK, Tomcat, Eclipse installation (this in a

1. Installing the JDK(1) Download Jdk8,win64 version: http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html(2) Click on the downloaded EXE file to installSelect the JDK installation location, I choose

Variants of the timestamp 1,timestamp DEFAULT current_timestamp on UPDATE current_timestampRefreshes the data column when new records are created and existing records are modified 2,timestamp DEFAULT Current_timestamp This when creating a new

First we look at the log in MySQL, mainly includes: error log, query log, slow query log, transaction log, binary log;Logs are an important part of the MySQL database. The log file records the changes that occurred during the MySQL database

I. Introduction Java is cross-platform, but most Java B/S programs are deployed on the Linux platform, because Linux has the advantages of open source and free. So I decided to use the Linux system when learning Java. MySQL is a frequently used

Is the final effect of the program, including data display, add, modify, and delete common functions of these database operations. My debugging environment is XP and MySQL version is mysql4.0.23 1. Install the ODBC driver of MySQL Download driver

MySQL database insert and update statementsThe SQL statements used to operate databases are generally divided into two types: Query statements, SELECT statements, and update statements, which are also called data operation statements. The

Mud: mysql HELP command instructions, mud mysql This article was sponsored by Xiuyi linfeng and first launched in the dark world. Do you need to remember many mysql commands when installing, managing, and using mysql. In addition, for beginners,