MySQL

One, install MySQL If it is a Windows user, MySQL installation is very simple, download the installation files directly, double-click the installation file step-by-step operation can be. Linux installation may be more simple, in addition to

Where optimizations are primarily in the Select, because they are used most largely, but the same optimizations can be used for delete and UPDATE statements. However, please note that the following optimizations are not complete. MySQL has

We must have used phpMyAdmin inside the database import, export function, very convenient. But in practical applications, I found the following questions: 1, the database exceeds a certain size, such as 6M at this time using the export generally no

1, into the MySQL directory under the Bin folder: cd MySQL to the Bin folder directory As I entered the command line: CD C:/Program files/mysql/mysql Server 4.1/bin (or add the directory directly to the environment variable path of Windows)2,

Subqueries are most commonly used in the WHERE clause of the Select-sql command.A subquery is a SELECT statement that is nested within a SELECT, select ... INTO statement, INSERT ... INTO statement, DELETE statement, or UPDATE statement or nested in

First, preparatory work 1, respectively in master and slave implementation of the following, convenient MHA check replication:Grant all privileges in *.* to ' root ' @ ' 10.1.1.231 ' identified by ' rootpass ';Grant all privileges in *.* to ' root '

Database has not been much attention, some time ago looked at the basic knowledge of MySQL, do not see do not know, a look startled, a lot of foundation are unexpectedly do not know, have been silly with some simple, stupid method, look at the

Let's start by talking about the creation of Full-text search. First in the MySQL data command prompt below to create a person table CREATE Table Table name (-> ID INT auto_increment not NULL PRIMARY KEY,-> title VARCHAR (200),-> Fulltext (title)->

Today, I built a test environment on my test server, but there is a problem with the connection between the Web and MySQL, I am a bit lazy, do not want to MySQL in this test library to remove the recreate and give permissions, just want to take the

MySQL Replace instance tutorialYesterday because of the import of data when a data came out, after the thought of using update and replace combined to do the exercise Oh,Update tablename Set Fields=replace (' AA ', ' BB ', str) whereReplace into and

Method 1 Using phpMyAdmin, this is the easiest, to modify the MySQL library's user table, But don't forget to use the password function. Method 2 Using Mysqladmin, this is a special case of the previous declaration. Mysqladmin-u

But found that Firefox always reported unterminated string literal error. Copy that piece of text to txt open found a few black box, the original is the MySQL tutorial line tag rn, in the TXT because of the use of double-byte and can not be

Process with analyze and deal with them on a regular basis ANALYZE [Local | No_write_to_binlog] TABLE tb1_name[, Tbl_name] ... Define Tables Analyze Table table_name CHECK TABLE Tb1_name[,tbl_name] ... [option]...option = {QUICK | FAST | MEDIUM |

Show tables or show tables from database_name; Displays the names of all tables in the current database tutorial show databases; Displays the names of all the databases in the MySQL tutorial Show columns from table_name to database_name; or show

Under normal circumstances, our VPS host environment if according to similar AMH panel, if there is a data disk when the site project will be independent of the data disk storage, and the system and the Panel environment database storage in the

Connect MySQL and run the following command: The code is as follows Copy Code Mysql-u root-pMysql>use MySQL;Mysql>select host from user where user= ' root ';Mysql>update User Set host = '% ' where user = ' root

The mysql operation in php is very simple. However, when I was working on a small tool recently, I found that Chinese characters are garbled in the database written to mysql by php. This garbled problem has plagued me for a long time, clearly

Mysql encapsulation of file operationsIn the view of Mysql operations on files, we found that the operations on files on different operating systems, in addition to using standard C runtime library functions, including open, close, seek, etc, the

About LEMPThe LEMP architecture is a group of widely used open-source software packages for WEB servers, which correspond to Linux, nginx (pronounced Engine x), MySQL, and PHP respectively. Because it is based on Centos 6, we do not need to consider

Common errors!1016 error: the file cannot be opened. Use the background or phpmyadmin to fix the problem.1044 error: The database user permissions are insufficient. Contact the space provider to solve the problem.1045 error: incorrect database