MySQL

Deploying Zabbix monitoring MySQL(1) Install LAMP Environment[[email protected] ~]# yum-y installmysql-server http php(2) The dependency packages required to install the Zabbix Web[Email protected] ~]# yum-y installmysql-dev gcc net-snmp-devel

Http://jingyan.baidu.com/article/597035521d5de28fc00740e6.htmlAfter using MySQL, no matter the capacity, found that more than two other (SQL Server, Oracle) more useful, all of a sudden like. Below for those who do not know how to get the children's

int[(M)] [UNSIGNED] [Zerofill]An integer of normal size. The signed range is 2147483648 to 2147483647. The unsigned range is 0 to 4294967295.Int (1) and int (10) have no difference in themselves, but with the (M) value, there will be a display width

After installing MySQL connection error:[[email protected] app]# Mysqlerror 2002 (HY000): Can ' t connect to local MySQL server through socket '/var/lib/mysql/mysql . Sock ' (2) [[email protected] app]# mysql-uroot-penter Password:error 2002 (HY000):

f you is not familiar with MySQL stored procedures or want to review it as a refresher, you can follow the MySQL stored P Rocedures Tutorial.We'll create the stored procedures for the demonstration in this tutorial. The first stored procedure gets

The purpose of this blog: ① summary of their own learning process, equivalent to study notes ② to share their own experience to everyone, learn from each other, communication, not commercialcontent inevitably appear problems, welcome to correct,

I. What is an index?Indexes are used to quickly look for records with specific values, and all MySQL indexes are saved as B-trees. If there is no index, MySQL must start scanning all records of the entire table from the first record until it finds a

MySQL transaction tables and non-transactional tablesWhen viewing the Max_binlog_stmt_cache_size parameter interpretation (Getting Started tutorial qkxue.net), there is such a word if nontransactional statements within a transaction require More

Here, the first thing to say is that today's web applications, the processing of data objects, are structured, but also unstructured. exist at the same time. However, when Spring-boot operations the database, if the data source is configured in the

MySQL query today, yesterday, nearly 7 days, nearly 30 days, this month, the last month of data method Analysis Summary:There is an article table article, the time to store the article's add-on is the Add_time field, which is of type int (5), and

21 minutes MySQL Getting Started tutorialSource Post URL: http://www.cnblogs.com/mr-wid/archive/2013/05/09/3068229.htmlDirectory First, the relevant concept of MySQL introduction Second, the configuration of MySQL under Windows

MySQL prevent duplicate Insert Record method summaryThere are many ways to prevent MySQL from repeatedly inserting records, usually Ignore,replace,on DUPLICATE KEY UPDATE, which we can also judge in PHP.Scenario One: Using the Ignore keywordIf the

When using MySQL to create data tables, it is unavoidable to involve the concept of character set and collation, which is not well understood before.The two days are not very busy, and I tidied up a bit.Let's take a look at character set and

Verify that there is a MySQL service in the list of computer services (1) Right click on the desktop computer icon appears menu list options, check management (there are several ways to open the computer local services list, here is justThe way I

Http://blog.csdn.net/hzcyclone/archive/2010/08/18/5821370.aspxThe MySQL configuration file is/etc/my.cnf, which is configured by modifying it to configure MySQL./etc/my.cnf from the following files:If your memory is ≤64m, copy/usr/share/doc/mysql/my-

Version: 5.7.9Installation of the newly installed CentOS 6.3 MySQL 5.7.9 problem1, first uninstall the system comes with the MySQL 5.1 packageYum-y Remove mysql-libs-5.1.61-4.el6.x86_642. Start installing MySQL 5.7.9 package3, Error:

The show Databases command is used to display all databases.Show databases command format: show databases; (Note: There is a last s)For example:mysql> show databases;Note: To modify the default encoding of the database in order not to be garbled at

Original URL Link: http://wangwei007.blog.51cto.com/68019/1718311MySQL is a cross-platform open source relational database management system, currently MySQL is widely used in small and medium-sized websites on the internet. Because of its small

New Features of MySQL 5.6 GTID and new features of gtid GTID Overview What is GTID? GTID (Global Transaction ID) is the ID of a committed Transaction and a globally unique ID. GTID is actually composed of UUID + TID. UUID is the unique identifier of

Use pt-query-digest to find the SQL statement that is not suitable, pt-query-digestsql  Overview of pt-query-digest1. Indexes can be executed more quickly, but there must be unreasonable indexes. If you want to find those indexes that are not very