MySQL

Today, we found that the VPS hard disk is almost full. The first reaction is: it must have been caused by a log file of something, because it had similar experience in WINDOWS before. After analysis, find the reason: MYSQL Log File. You can also

This update is the last update of MySQL5.0.91. We recommend that you update MySQL 5.0.91 immediately. This also means that the MySQL 5.0 series will not be developed. Detailed updates are as follows: Security Update: solved the problem that the

Since the acquisition of SUN, Oracle has released the latest MySQL Enterprise version of SUN's MySQL product line. Oracle said that the latest version of MySQL Enterprise is coming soon and that Oracle is continuously investing in MySQL. Oracle

Each table has a table character set and a proofreading rule. It cannot be blank. To specify the TABLE Character Set and collation, the create table and alter table statements have an optional clause: Create table tbl_name (column_list) [Default

PHPChina news: According to foreign media reports, some analysts pointed out that Oracle may sell or split the MySQL business under Sun Microsystem to obtain approval from regulatory authorities for its acquisition of Sun. Analysts from Global

There are also some criticisms on Template engines such as Smarty. Critics often complain that the engine features are integrated into a certain degree of logic. After all, the purpose of the template engine is to completely separate the

This article introduces ten little-known MySQL skills.MySQL is easy to learn and easy to use, and comes with a wide range of technical documents, these two factors make it widely used. However, with the rapid development of MySQL, even a veteran of

Abstract: This article introduces the optimization techniques for data tables. The main content is: select the table type and open as few tables as possible, the relationship between the locking table and the query speed and how to optimize the

One book is in hand, learning is not worried.Using this book, you can learn how to use PHP, MySQL, and Apache, the three most advanced open-source Web development tools in a short time, to create dynamic and interactive Web sites and

There are two types of SQL statements used to operate databases: Query statements, SELECT statements, and update statements, which are also called data operation statements. In other words, data is modified. There are three statements in standard

MariaDB is a MySQL branch version that uses the Maria storage engine.Michael WideniusA free and open source database server developed by the company. Downloading MariaDB 5.1.50: http://downloads.askmonty.org/ MariaDB 5.1.50 improvement records

I tried to speed up the query in the last two weeks and achieved some results. I solved some problems and wrote them down for future display. Since the company does not have a dedicated DBA, I am not very familiar with mysql databases, and the

MySQL has a command line named mysql. Enter mysql at the prompt and the following simple prompt will appear: Is.-0ubuntu0..., Oracle and // or help. Type to> Mysql command line parameters generally include: -U User Name -P Password -H Host Name

The string function CONCAT (str1, str2,...) returns the string generated by the connection parameter. If any parameter is NULL, the return value is NULL.[SQL]View plaincopyMysql> select concat ('My, s', 'ql ');-> 'mysql'Mysql> select concat ('My,

For MySQL databases, if you want to use transactions and row-level locks, you must use the INNODB engine. If you want to use full-text indexes, you must use myisam. INNODB is more practical, secure, and stable, but less efficient than MYISAM.

Anyone familiar with MySQL may know that MySQL has an "insert ignore" syntax to ignore existing records. PostgreSQL does not currently provide such syntax, but it can be replaced by other methods. T_girl = # \ d insert_ignore Table "ytt.

Overview The built-in replication function of Mysql is the basis for building large and high-performance applications. This distribution mechanism replicates data from a Mysql host to another Server Load balancer instance, and execute it again.

Both PostgreSQL and Oracle provide statements such as row_number () over () to rank corresponding fields, which is very convenient. MySQL does not provide such a syntax.Table "ytt. t1" Column | Type | Modifiers -------- + ----------------------- + --

How can I transfer data in Ubuntu 12.04? This discussion gives the general direction: Http://askubuntu.com/questions/224/how-to-i-move-mysql-data-files-onto-different-partition The default data file path is the/var/lib/mysql directory, but the

1. mysql installation documentation http://download.csdn.net/detail/u012750578/6794411 Change the table. It may be that your account is not allowed to log on remotely, but only on localhost. At this time, you only need to log in to mysql on the