MySQL

Windows--mysql Zip version installation record: Step1. Official website Download Zip Package: http://cdn.mysql.com//Downloads/MySQL-5.7/mysql-5.7.10-winx64.zip Step2. Unpack the package, add E:\software\mysql-5.7.10\bin in Path

Mission Objective: To import content from the current network database (mysql5.5,windows) into the test database (Mysql5.1,linux)1. Because I am not familiar with MySQL, I first consider the solution is to use the ready-made database management

Upgrade Method:One:in-place Upgrade involves turning off the old version of MySQL, replacing the old version of MySQL with the binaries or packages into a new (System library replacement, and software replacement), restarting MySQL to the existing

There are several reasons for garbled problems, one of which is because MySQL uses the iso-8859-1 (or Latin1) character set by default, while Java internally uses Unicode encoding, so when inserting data into the MySQL database in Java, or when

1. Unzip the mysql-5.1.73 installation package (same nginx)2. Pre-compile, compile and install (steps below)CD mysql-5.1.73./configure--prefix=/usr/mysql-5.1Make && make install3 Adding a MySQL user group and user name:Groupadd MySQLUseradd mysql-g

Source: http://jingyan.baidu.com/article/8cdccae946133f315513cd6a.htmlRed part for me to addMySQL version 5.7 and above is different from the previous configuration, here to share with you experience.Tools/Materials MySQL 5.7 and later zip

Record memo, initial data is as follows:DROP TABLE IF EXISTSt_demo_product;CREATE TABLE IF not EXISTSt_demo_product (proidint( -), Pronamevarchar( -), priceint(Ten), PRIMARY KEY(proid)) ENGINE=InnoDBDEFAULTCHARSET=GBK;DROP TABLE IF

The following describes how to copy a MySQL database, MySQL replication is actually to copy data from one node (master) to another node (slaves). Of course, depending on the application architecture, the method is also different, the replication

The SQL statement for calculating the average value of mysql every 30 minutes, Table Structure: Create table 'instance' ('id' int (11) unsigned not null AUTO_INCREMENT, 'timestamp' int (10) unsigned default null, 'cpu' decimal (8, 3) default null,

A simple optimization tutorial on table connection query in MySQL, In MySQL, the execution process of a left join B join_condition is as follows: · Set table B based on all tables on which table A and table A depend. · Set Table A according to all

Compile a script to allow Xtrabackup to back up MySQL Data, Xtrabackup Backup recovery PrincipleWhen backing up the innodb table, xtrabackup several threads copy the. ibd file of the independent tablespace, constantly monitor the changes in the redo

Basic tutorial on table subqueries and associated subqueries in MySQL, MySQL table subqueryTable subquery refers to a table with N rows and N columns returned by a subquery.MySQL table subquery instanceThe following are two original data tables used

MySQL optimization -- UsingfilesortThis problem occurs because MySQL can only use one index for each query. The WHERE condition of your SQL statement is different from that of ORDER BY. If the index is not created, order by cannot use the index, and

Mysql database deadlock Process Analysis (select for update ), There is a business demand recently. Multiple machines need to query data from a Mysql table at the same time and perform subsequent business logic. To prevent multiple machines from

MySQL trigger basic learning tutorial, 0. Basic concepts of triggersA trigger is a special stored procedure that triggers execution when inserting, deleting, or modifying data in a specific table, it has more refined and complex data control

Tutorial on creating and using temporary tables in MySQL, When you work on a very large table, you may occasionally need to run many queries to obtain a small subset of a large amount of data, instead of running these queries on the entire table,

Create a Sequence for auto-increment in MySQL, In project applications, the following scenario was used:An int-type serial number is required in the interface. Due to the multi-threaded mode, if a timestamp is used, there may be duplicates (of

Mysql global ID generation method, As the business grows, the production system will always go through a process in which the business volume grows from small to large. scalability is an important indicator to consider the high availability of the

Generate a global ID based on the MySql extension function, This article uses the MySQL extension function replace into to generate a global id. replace into is the same as INSERT. However, when replace into is used to INSERT new data, if the

The basic usage tutorial of Distinct and Group By statements in MySQL, Remove duplicate query results from MySQL DistinctDISTINCTYou can use the DISTINCT keyword to remove duplicate records of a field in the query.Syntax: SELECT DISTINCT(column)