MySQL

Due to the frequent use of powerdesigner in daily data modeling, the use of reverse engineering to generate models more quickly improves efficiency, so the summary is used as follows: 1. Installing the ODBC driver for MySQLCONNECTOR/ODBC 5.1.10:Http:

CentOS Setup MySQL Character setVim ETC/MY.CNFModified to read as follows:[Client]port=3306Socket=/var/lib/mysql/mysql.sockDefault-character-set=utf8[Mysqld]Datadir=/var/lib/mysqlSocket=/var/lib/mysql/mysql.sockUser=mysql# Disabling Symbolic-links

MySQL 5.7.19 Source Installation1. Installing dependent Packages# yum-y Install ncurses-devel libaio-devel cmake gcc gcc-c++ bison perl-time-hires2. Download and install boost2.1. Download the Package# wget

First, show engine InnoDB status profile:Show engine InnoDB status is a tool that MySQL provides to view the time information of the InnoDB engine, and for now there are two comparisonsCommon place One, deadlock analysis two, InnoDB memory

1. Create student and score tablesCREATE TABLE Student (ID INT (Ten) is not NULL UNIQUE PRIMARY KEY,Name VARCHAR () is not NULL,Sex VARCHAR (4),Birth year,Department VARCHAR (20),Address VARCHAR (50));Create a score table. the SQL code is as follows:

This time using JMeter to connect to the MySQL database on this computer, query the contents of the User_info table:2. Open JMeter, import in test plan, connect MySQL mysql-connector-java-5.1.30-bin.jar package, enter, no jar package can Baidu

In the writing project, there are more garbled problems, the current note for the project is not garbled, in the storage of MySQL garbled.1, through the following statement to see the database, the table client, server-side encoding is consistent,

MySQL is a common need in work, so it has to be mastered, and what we have been saying is how to save it.You'll only be able to save a fart. So I hope you can read the data in the way of how to do a little bit more effort.This and the last one is

MyISAM and InnoDB explanationInnoDB and MyISAM are the two most common table types used by many people when using MySQL, both of which have pros and cons, depending on the application. The basic difference is that the MyISAM type does not support

One, the optimization of the website optimized MySQL;1, prefix index, you can use the prefix to identify the uniqueness, the prefix as the index content, you can save the storage index space, thereby increasing the query speed of the index. Distinct

MySQL's InnoDB storage engine supports transactions, which by default are row locks. Because of this feature, the database supports high concurrency, but if the InnoDB update data is not a row lock, but a table lock, then its concurrency will be

1. Download. Mysqlhttp://dev.mysql.com/downloads/mysql/Download Windows Zip package, unzip, add path path bin, System environment variable->path->d:\mysql-5.7.19-winx64\bin modify configuration file: D:\mysql-5.7.19-winx64\ My-default.ini (if you do

Table Description:A table is equivalent to a file, and a record in a table is equivalent to a row of files, and a record in a table has a corresponding title, called a field of a table, at different points.For example: Id,name, age is called a field,

PrefaceSome of the feedback before several articles too theoretical lack of practical details, this article on more operability of the content bar.Note: This article is based on the background of MySQL, many of which are applicable to other

First, the Knowledge reserveMySQL database basic Operation knowledge ReserveDatabase server: One computer (high memory requirements)Database management system: Like MySQL, is a softwareDatabase: Oldboy_stu, equivalent to FolderTable:

2017-09-05 20:10:58I. SQL statements and their typesSQL uses keywords, table names, column names, and so on, to describe the contents of the operation by combining them into a single statement. Keywords are English words that have meaning or are

In fact, SQL optimization is the optimization of the index, without index, a single table query how you check the time complexity is O (n), so the SQL optimization problem is the key on the index. There are two types of MySQL indexes,hash and tree,

Mysql security, mysql 1. Set the directory permission correctly:The principle of setting directory permissions is to separate software from data, as follows:1. Install mysql under a separate user2. During installation, the installation is performed

Offline installation of mysql and centosrpm using rpm in centos 6.4 Use the rpm installation package to install mysql offline. Preparations: Download the mysql offline rpm installation package from the official website (this will not be demonstrated

MySQL installation and tossing-encoding settings, mysql tossing-Encoding 1. Install MySQL Download Mac OS X 10.12 (x86, 64-bit), DMG Archive (https://dev.mysql.com/downloads/mysql/) edition from the official website