MySQL

Sometimes the website needs to be migrated, and database migration is inevitable. However, there are usually few servers that only run a website. We need to do this without stopping the database [...] Sometimes you need to migrate the website, and

Install the MySQL plug-in of QT in windows. Refer to the two URLs. Installation of http://www.jb51.net/article/23876.htm Database Http://blog.csdn.net/polokang/article/details/6403303driver compilation process   Notes: Change mysql. pro to a

1. How to execute in parallel. There is a table with a very large data volume in the database. When alter is performed on this table, the table is read-only at this time. Because of the large data volume, alter takes a long time, if there is an

Note: This article is from the blog "afei". If you want to reprint this articleArticle, Please contact the author! And indicate the source: http://blog.csdn.net/faye0412/article/details/7886153 More than once, my colleagues asked me the

One advantage of OpenOffice.org is that multiple databases can be used. With the corresponding driver, OpenOffice.org can be linked to any database system! However, you still need to worry about choosing the connector (driver) between OpenOffice.org

Many problems may occur when configuring the JSP development environment. Thanks to the experiences of many predecessors on the internet, the author cl41's JSP connection to the MySQL database strategy and the author's saulzy's MySQL study notes and

Install MySQL Sudo apt-Get install mysql-server # automatically obtain available versionsYou can also write it like this.Sudo apt-Get install mysql-server-5.0 # Install MySQL Server version 5.0After installation /Etc/init. d/MySQL start (STOP) is

Procedure 1. log on to the system as a system administrator. 2. Open cmd ----- Net start to check whether MySQL is started. If it is enabled, the net stop MySQL will be stopped. 3. Install MySql in D: \ USR \ Local \ mysql4 \ bin. 4. Skip the

First, I want to say one sentence: I despise people who are engaged in it in China. They are completely speechless and solve this problem almost exactly the same. They are copied. What's more, an error is thrown: Access denied for user 'root' @

MySQL common SQL commands ImportMysql-uroot-proot test ExportMysqldump-uroot-proot test> C: \ test. SQL Mysqldump-uroot-proot-r test> C: \ All. SQL-r stored procedure Create a databaseCreate Database test; Show DatabaseShow databases; Use

Class talk (models. Model ):Time = models. datetimefield ()Content = models. textfield ()   After the above model is defined, the information generated by the table cannot be viewed using manage. py syncdb. Of course, the generated table is not seen

When a primary key ID is deleted from the primary table, it cannot be deleted because the table associated with the primary key has related field data. I checked a lot of information and found that I used on restrict to create a table Association.

Create Table 't1 '( 'Id' char (1) not null, Primary Key ('id ') ) Engine = InnoDB default charset = gb2312 Create Table T2 (Id char (1) not null,Foreign key (ID) References T1 (ID)); Table T2 can be correctly created, but the foreign key is not

1. Problematic reads in transactions: dirty reads, non-repeated reads, Phantom reads The dirty read transaction T1 updates the content of a row of records, but does not commit the modifications. Transaction T2 reads the updated row, and T1 executes

Note: This article is from the blog "afei". If you want to repost this article, please contact the author! And indicate the source: http://blog.csdn.net/faye0412/article/details/7915300 These two days, I have been helping my colleagues with the

Note: This article is from the blog "afei". If you want to repost this article, please contact the author! And indicate the source: http://blog.csdn.net/faye0412/article/details/7884245 I have contributed a script to monitor the MySQL process. I

Note: This article is from the blog "afei". If you want to repost this article, please contact the author! And indicate the source: http://blog.csdn.net/faye0412/article/details/8817021 When verboice is installed today, MySQL/Writing File error

1. MySQL is sorted by the first letter of the pinyin Field Value Keywords binary: selectName from topic order bybinary name ASC   2. Obtain the first letter of Chinese pinyin in PHP. Directly call the following function. For example, Echo getinitial

The PHP connection and MySQL interaction are very convenient, and the API interface is also very similar to the MySQL C APITest:Create a MySQL tableDatabase phpMyAdminTable creation statement: CREATE TABLE IF NOT EXISTS `student` ( `id` int(11) NOT

The following statements are MSSQL statements and cannot be used in access. SQL classification:DDL-Data Definition Language (create, alter, drop, declare)DML-data manipulation language (select, delete, update, insert)DCL-Data Control Language (Grant,