MySQL

The so-called read and write separation is the preparation of two types of MySQL database, a update operation (master), a query operation (slave). Call Master when the application needs to update data and invoke slave when querying data. The benefit

In some applications, you need to know who is working on the table, what has been done, and what is responsible for the pursuit. In MySQL, you can use a trigger implementation.1: Create a test table Mysql> CREATE Table A (a

C + + uses MySQL's C API and the two ways to operate MySQL via MySQL's connector C + + 1.1.3Operation with vs2013 and 64-bit mSQL 5.6.16The database used in the project is named BooktikTable for Book..........(Total 30 records, only partial records,

1. Insert record--insert intoinsert into table_name (field1,field2,field3)  values (Value1,value2, VALUE3), or you can not specify a column name, but the order after values should be the same as the order in which the columns are arranged

The original use of MySQL processing less data, small-scale, do not pay attention to the performance of the problem. The recent spike in data volumes, at least 20W of new data per day, has caused MySQL to be poor in performance and must be valued

#!/bin/bashecho "Please enter the password for the root account of the MySQL that you want to reset:"Read-p "Root new password:" NewpwdEchoMysql-uroot-e 'Use MySQL;Update Mysql.user set Password=password (' ${newpwd} ') where user= ' root ';Flush

Goal: Make a full backup every 7 days, make a binlog log every day, delete the previous backup and generate a new full backup and Binlog log in the second week, and the backup requirement is automatically completed 2:00 every day.MySQL version:

1: View the current transactionMysql> SELECT * from Information_schema.innodb_trx \g2: View the currently locked transactionsMysql> SELECT * from INFORMATION_SCHEMA. Innodb_locks;3: View transactions for the current lockMysql> SELECT * from

Download and decompress MySQL databasewget http://mirrors.sohu.com/mysql/MySQL-5.7/mysql-5.7.4-m14-linux-glibc2.5-x86_64.tar.gzTAR-XVF mysql-5.7.4-m14-linux-glibc2.5-x86_64.tar.gz-c/usr/local/mysql-5.7.4 2. Create MySQL users and modify the

Backup of the database can prevent the loss of data caused by unexpected situations such as server downtime, disk corruption, RAID card corruption, and so on.Backup tool for MySQL:MysqldumpIbbackupReplicationLVM Snapshotor third-party tools

MySQL single-process multi-threaded, that is, the MySQL instance on the system is a process that the schema is similar to SQL Server and the Windows version of the Oraclemysql database is composed of some column physical files. Files similar to frm,

First, the storage engineMysql>show engines;+--------------------+---------+----------------------------------------------------------------+-------------- +------+------------+| Engine | Support | Comment | Transactions | XA | savepoints |+---------

1. Delete the database name of the drop databases database;mysql> drop database test;That is, delete the database schema2 . Create DATABASE Database namemysql> CREATE DATABASE test;Windows and Linux handle database names and table names

Lab Environment:Two MARIADB servers, IP: 172.16.2.16 and 172.16.2.17The version of MARIADB is 5.5.36, which is installed using binary mode. The installation is complete./mydata/data Database File storage directory/mydata/binlog/binary log file

Solve the Problem of uninstalling MySQL in CentOS In CentOS, how does one completely uninstall MySQL? Solve the Problem of uninstallation being unclean System: CentOS 6.5, MySQL: MySql 5.6 Here, we mainly solve the problem of installing and

JDBC-MYSQLEclipse connection and simple use I have provided a lot of tutorials on connecting JDBC and MYSQL to the Internet, but I feel that they are not detailed enough. JDBC is used in this job, so I wrote the next step by referring to the online

[MySQL] MySQL database transactions have been RUNNING in the production environment Preface: The operations staff reported that a ticket was submitted and the page was not returned. 1. At first, I suspected that the application server or database

How to delete drop, truncate, and delete table data in an SQL statement Although it is not recommended that you use commands to delete the items in the database table in the small Editor of the green Resource Network, these delete commands are

Mysql tutorial-slow connection to local MySQL in Windows 7/8 Recently, some programs such as phpcms had encountered this problem during local website debugging, and the speed was very slow. The following article occasionally reminded me of the

Summary of problems with mysql Installation When MYSQL is installed, cocould not start the service mysql error: 0 is processed. When you encounter the cocould not start the service mysqlerror: 0 error during installation and reinstallation, you can