MySQL

This article mainly introduces the MySQL log file, this article explains the error log, binary log, General query log, slow query log, InnoDB online redo log, update log and other log types and role introduction, need friends can refer to the

This article mainly summarizes several ways to solve php+mysql Chinese garbled problem, very practical, the need for small partners can refer to. Multi-language support is introduced from MySQL 4.1, but the Chinese in PHP will appear garbled. No

MySQL log files believe that we all have a lot of understanding, MySQL log files in general:/var/log/mysqld.log, the following teach you to modify the MySQL log file location method for your reference. Today need to change the location of the MySQL

Use MySQL to get the system performance and status of the code snippet, so that the need for friends can refer to, I hope to help you copy code as follows: #!/bin/kshInterval=5prefix= $INTERVAL-sec-statusTouch/tmp/runningRunfile=/tmp/runningMY-E '

1. To optimize the query, you should try to avoid full table scan, first consider the where and the order by the columns involved in the establishment of the index. 2. The use of!= or <> operators in the WHERE clause should be avoided as far as

MySQL partition range partition tutorial The tables in the range partition are partitioned in one of the following ways, and each partition contains the rows of those partition expressions whose values are in a given contiguous interval. These

MySQL database sub-partition tutorial A child partition is a second split for each partition in a partitioned table. For example, consider the following create TABLE statement: CREATE TABLE ts (id INT, purchased DATE) PARTITION by RANGE (year

In web development, we often need to insert data from one table into another, and sometimes we need to specify an import field that only needs to import records that don't exist in the target table, although they can be split into simple SQL in a

MySQL itself has a CSV engine that allows you to import data from a CSV into a MySQL database, faster than a batch program written in PHP or Python.specific implementation code examples: Copy Code code as follows: Load data infile '/tmp/file.csv '

There are many ways to export from SQL to MySQL, which is a simple way to import and export without programming, directly using the graphical interface in SQL and MySQL. The prerequisite is that you have installed the SQL Server client and the

Because the operator a large number of deleted relationship table data up to 20 million rows, but MySQL does not automatically reclaim space, so decided to do defragmentation (first Test): Myisamchk-r relationship Under the MySQL run, the results

For beginners of SQL, the concept of null values often creates confusion, and they often assume that null is the same thing as an empty string. This is not the case. For example, the following statements are completely different: Mysql> INSERT into

Explanation of the Explain column: Table: Shows which table the data in this row is about Type: This is an important column that shows what type the connection uses. The connection types from best to worst are const, EQ_REG, ref, range, Indexhe,

Mysql| attack 1, connect to each other MySQL server Mysql-u root-h 192.168.0.1 Mysql.exe This program is in the bin directory where you have MySQL installed 2. Let's take a look at some of the databases in the server Mysql>show databases; MySQL

MySQL Introductory article The last chapter on how to install and test MySQL, the environment can be built to continue our study. This article is mainly familiar with the writing of common commands. 1, start the MySQL server In fact, the previous

MySQL;? # All text and code within this file are (c) opyright # Pangolin Software Limited 2000. # # You'll edit this file to customise it for your web-site, # However, the actual source code may is altered in # any way without the prior written

Mysql|window my php4 and MySQL packages are php-4.0.1pl2-win32.zip, Mysql-3.23.19-beta-win.zip. Install MySQL first, use winzip8.0 to open the package for full installation, the default installation path is: C:\mysql; When the installation is

This article introduces two kinds of MySQL on the self-add ID again from 1 sorting method, Jane less for a project initialization data workload, interested friends can refer to the Recently always to initialize data for this project, make a lot of

This article mainly introduces the operation of the MySQL log some methods, the deletion of the log to do a key explanation, the need for friends can refer to the We can see the MySQL in the installation directory of MySQL binary log files, such as

First installed in the local MySQL, and installed a Navicat management tool, and a new project to test:The simple test method is to put a button, click, read the remote picture, and then save to the database, and then read out to display the