mysql 5 5

Get Docker in 5 minutes! Docker Editor's note:In July 3, the "CSDN online training: the way to Docker" and the number of online users reached a new high. However, in the final QA stage, I found that the problem was still very elementary, docker technology is still in the infancy of Gartner's technological curve. Just a few days ago, I saw a very easy-to-understand article titled What is Docker? After reading this article, I will have a clear unders

1. Download the free installation package from the official MySQL websiteProgram.2. decompress the package and copy the directory to the actual running directory. For example, D: \ Program Files \ mysql \ mysql3307. 3. Copy the my-large.ini to the same directoryMy. ini. 4. Open My. iniFile Modification port (required) and other configurations (not required ). 5.

in the table columns can be considered by the user according to the actual situation.For example, there is a menu table in the production library below, and the field type and length are as follows: -- using procedure analyse () analysis SELECT * from PROCEDURE Analyse (N.); The maximum length of the value in the remark field below is 30 length, so the system suggests 30 lengths: 2. Improve the efficiency of table access by foldingThe folding can be vertical split and horizontal split, this

New features such as views, stored procedures, and triggers are added to MySQL 5. Many of them are described. One of them is called the store function, which is a bit like the stored procedure, but the returned value is Oh, the usage is quite flexible, so we will introduce it. Mysql> delimiter | mysql> Create Fu

PS: MySQL 5.5 series has become a stable version for some time, but according to my survey, it is still dominated by the 5.1 series in the production environment. In large Chinese companies, it is only determined that Jinshan is using 5.5. Several of the company's advertising statistics servers, the previous O M directly uses the built-in MySQL 5.0 series. The new programmer writes a new advertisement stat

1. Ask for a class math average score.(1). Select sum (Math)/count (math) as math average scorefrom student;(2). Select AVG (math) as math averagefrom student;(3). Select AVG (name) as Xiao Ming's average scoreFrom student;//02. Ask for the average score of a class total.(1). Select (Sum (Chinese) +sum (math) +sum (English))/count (*)from student;(2). Select AVG (chinese+math+english)from student;3. Ask for the highest score and the lowest score of the class language.Select MAX (name), min (name

optimization method to export your database to reduce unknown problems. 4. Import the exported database backup into the new version of the MySQL database. # Mysql-p3307-uroot Mysqlsystems_com 5. Overwrite the MySQL database in the data directory of the old version database to the new version. # Cp-r/opt/