MySQL

My personal practice is: phpMyAdmin export utf-8 insert mode Abc.sql FTP Abc.sql to Server SSH to Server Mysql-u abc-p use KKK (database name, if not on CREATE database KKK) set names ' UTF8 ' source abc.sql Note: I see set character set UTF8;

Found_rows (): Select Row_count (): UPDATE Delete Insert Note: You need to work with the appropriate operation, otherwise the value returned is only 1 and 1 (all incorrect values) Example: Drop database if exists ' mytest '; Create database '

Recently replaced the server, to do the database migration, the data in the database from server A to Server B.because of the large amount of data, it takes too long to make the dump directly, so it is handled as follows:first of all, on Server B

This article is a MySQL in the optimization of SQL statements query commonly used 30 methods for detailed analysis of the introduction, the need for a friend under the reference 1. To optimize the query, you should try to avoid full table scans,

MySQL under Linux database, table name, column name, alias rules: 1. Database name and table name are strictly case-sensitive; 2. The alias of the table is strictly case-sensitive; 3. Variable names are strictly case sensitive; 4. Column names

The design of MySQL index can make your database fly, greatly improve the efficiency of the database. There are a few things to note when designing a MySQL index: 　1. Create an index Indexing is especially important for queries as a major

This morning a friend said that their MySQL forgot the root password let me help to see, because no contact with MySQL so from the Internet to find information I have succeeded in my own practice!mysql version is 5.1 Here is the information from

By default, MySQL supports three engines: ISAM, MyISAM, and heap. The other two types are InnoDB and Berkley (BDB). ISAM ISAM is a well-defined and time-tested method of data table management, designed to take into account that the number of times

Of course, at the end of my code there is a mistake, not in the real sense of random data. Back home, quickly Baidu, this just know how to randomly access data. The rest of the code is not much to say, here's how to tell you the core Lookup data

This article mainly introduced the shell script to check the IP format and MySQL operation instance, this article directly gives the script code, needs the friend may refer to under Or part of the cronjob, which is the background interaction

  code as follows   $dbhost = ' localhost '; $dbuser = ' root '; $d bpass= ' 123456 '; $dbname = ' products '; $connect =mysql_connect ($dbhost, $dbuser, $dbpass); if (! $connect) exit (' Database connection

PHP Implementation synchronous remote MySQL: Requirements: Because the company's English web site is located in the United States, and these web site data to be synchronized with the mainland server data. Sync time is within one day.After you

1. Create a new user. Login to MySQL @>mysql-u root-p @> Password Create a user mysql> INSERT INTO Mysql.user (Host,user,password) VALUES ("localhost", "Phplamp", Password ("1234")); Refresh System Permission Table Mysql>flush privileges;

1, problems and anomalies Threadpoolasynchronousrunner-com.mchange.v2.async.threadpoolasynchronousrunner$deadlockdetector@75d634ea-- Apparent deadlock!!! Complete Status: Managed Threads:3 Active Threads:3 Active Tasks: 2. Find the reason It's

1. Select the most applicable field propertiesMySQL is good at supporting large data volumes, but in general, the smaller the tables in the database, the faster queries are executed on it. Therefore, in order to achieve better performance when

"Redo Log Buffer" "Redo log File"-Principle directory: 1. Redo Log Write process Figure 2. Related Knowledge Points Summary Chart 3.redo_log_buffer principle 4.redo_log_file principle 1. Redo Log Write process: 2. Summary of relevant knowledge

Town Yard text:The Confucian School of the practical and practical, line Buddhism Purdue sentient beings, the monastic Kangsheng fidelity, understanding of the easy to change the image. To science and technology to shine a good law, the achievement

Previously wrote a blog http://leihuang.org/2015/07/22/concurrence-lock/is how to use optimistic lock to solve concurrency problems, but the project pushed to the line after the error, as follows-08-13 15:12:44 [ERROR]

0. BackgroundIn a real-world development environment, the front-end program needs to update/insert data into the MySQL-specified library table for a given time period. As the amount of data increases, the base library table cardinality increases,

[Switch] Mysql insert Chinese error: Incorrect string value: '\ xE7 \ xA8 \ x8B \ xE5 \ xBA \ x8F... for column 'Course' at row 1, what is xe5x8cx97? Incorrect string value: '\ xE7 \ xA8 \ x8B \ xE5 \ xBA \ x8F...' for column 'Course' at row 1 The