MySQL

Common Mistakes! 1016 Error: File cannot be opened, use background repair or repair using phpMyAdmin. 1044 Error: Database user permissions are not sufficient, please contact the space provider to resolve 1045 Error: Database server/Database

Given an array of natural numbers in ascending order, the array contains duplicate numbers, for example: [1,2,2,3,4,4,4,5,6,7,7]. Problem: Given any natural number, the array is binary lookup, return the correct position of the arrays, give the

Slave_exec_mode=idempotent is a useful parameter in the MySQL replication environment: As long as the set global slave_exec_mode=idempotent is running on the standby, the SQL thread of the standby is running in the Nether mode , you can let the

Essays-66 Articles-0 comments-MySQL slow query (ii)-Pt-query-digest detailed slow query log one, Introduction Pt-query-digest is a tool for analyzing MySQL slow query, it can analyze Binlog, Gene RAL Log, Slowlog, can also be analyzed via

MySQL default Table_open_cache is 64, this value is small, if the max_connections is large, it is easy to cause performance problems.Performance: Database query efficiency is slow, show processlist found that more than the query is opening

LNMP Architecture Introduction The only difference with lamp is that n in Lnmp refers to Nginx (a Web service software similar to Apache). The application of this kind of environment is also very many at present. Nginx Design is designed to

Tag: color is medium tar local str local SSI GlobalDescription: Now on the market defined variables of the tutorial and books are basically stored procedures are described, but the stored procedure variables can only be used in begin...end block,

MySQL Query performance optimizationThe optimization of MySQL query performance involves many aspects, including library table structure, establishing reasonable index and reasonable query. The library table structure includes how to design

Xtrabackup User Guide InnoDB Data Backup toolXtrabackup is a innodb to do data backup tools, Support Online hot backup ( backup without affecting the data read and write, that is, no lock), is a commercial backup tool InnoDB hotbackup a good

Source: http://www.felix021.com/blog/read.php?2102Yesterday @zind classmate found me before a blog (has been modified), inside mentioned mysql_ping and mysql_opt_reconnect some things.The reason I wrote that blog is because some of the code written

MySQL performance tuning and Architecture design--9th chapter The performance optimization of MySQL database schema designPreface: Many people think that performance is optimized in the process of writing code (program code or database code), in

When you are building a table, you can set up cascading for deleting delete and modifying update. The concept of a foreign-key cascade Cascade is illustrated with an exampleIf there is a usertable in the database as follows:This user table is very

MySQL #1170 error (42000) blob/Text Column Used in key specification without a key length Here is my solution to translating foreign websites. When creating a new table or altering an existing table with primary key, unique constraints and

Cy163 Note: Before you see this method, Apache + PHP installation has never been successful (MySQL was installed before ). The reason for the installation failure is that the downloadPhp-5.3.0-nts-Win32-VC9-x86.zip PHP for Windows Is an

+ Proto. menuborder; VaR focusitem = body.doc ument. Layers [N]; Focusitem. Clip. width = body. Clip. width; Focusitem. Menu = L. Menu; Focusitem. Top =-30; Focusitem. captureevents (event. mousedown ); Focusitem. onmousedown =

Prepare the software first: Apache Official Website:Apache_2.0.55-win32-x86-no_ssl.msi,More versions are available here; PHP Official Website:Php-5.0.5-Win32.zip,More images,Download more versions; Official MYSQL:Mysql-4.1.14-win32.zip,More

Document directory 1 Preliminary Note 2 installing MySQL 5 3 installing apache2 4 installing PhP5 5 testing PhP5/getting details about your PhP5 Installation 6 getting MySQL support in PhP5 7. phpMyAdmin 9 links Version 1.0:Author: Falko

[Author: Zhang banquet this article version: V1.0 final modification: 2008.10.28 reprinted please indicate the original article link: http://blog.s135.com/post/375/] VPS (virtual private server) is the use of the latest virtualization technology to

Windows 10 64-bit installation of MySQL5.6.35 graphic tutorial, mysql5.6.3564 download 1. Download MySQL Community Server 5.6.35 Http://dev.mysql.com/downloads/mysql/5.6.html   2. decompress the MySQL package Decompress the downloaded MySQL package

A basic tutorial on querying logs and slow query logs in MySQL, I. query logs Query all the queries in MySQL by using "-- log [= file_name. Because all the queries, including all the select statements, are recorded, and the size is relatively large,