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With the company's business needs, it took two weeks to implement a small payment system, though small spite, all kinds of necessary modules such as account lock, transactional assurance, running water reconciliation are fully realized, the whole

Background:Self-growth is a very common data attribute, and in MySQL everyone is willing to let the field of the self-growth attribute be a primary key. In particular InnoDB, because of the characteristics of the InnoDB clustered index, using fields

CREATE DATABASE Db_studentinfo; Use Db_studentinfo;D rop TABLE IF EXISTS t_student; CREATE TABLE t_student (studentid varchar (+) NOT NULL, Stuno varchar (DEFAULT) NULL, stuname varchar DEFA ULT NULL, Stusex varchar (TEN) default NULL, Stubirthday

Review common points of knowledge in MySQLBoot off service mode for win version. Connect mysql command: mysql-u alex-p View all databases: show databases;use db_name; switch database show tables;  Show All tables select * from table name; Select

MySQL command summary (verbose version)1. Database-related operations:1) Create the database:Mysql> Create Database Temple;2) View the database:mysql> show databases;+--------------------+| Database |+--------------------+| Information_schema ||

Create several tables ~ For a brief description, the tbl_post blog table tbl_comment comment table and the tbl_user table tbl_tag label table can directly run the following SQL statement. Create database /*! 32312 if not exists */'yii '/*! 40100

A simple example of mysql's MERGE storage engine: bitsCN.com A simple example of mysql's MERGE storage engine Role: you can merge multiple tables with the same structure into one table. Supported versions: mysql5.1 Example: Assume that there are

1. Logic meaning of varchar (N)From MySQL4.1, N in varchar (N) indicates the maximum number of characters (characters) that can be stored in this field, not the number of bytes.Whether it is a Chinese character or a number, or a Chinese character,

Because the utf8 character set is currently the most suitable character set for conversion between different character sets, although you may not be able to correctly view the content in the database on the command line tool, I still strongly

The code is as follows: --ACL Tables --The structure of the table ' Aclresources ' DROP TABLE IF EXISTS ' aclresources '; CREATE TABLE IF not EXISTS ' aclresources ' ( ' Rsid ' varchar (+) not NULL, ' Access ' int (4) is not NULL for default 0, '

The simple ACL code in php is as follows: -- ACL Tables -- Table structure 'aclresources' Drop table if exists 'aclresources '; Create table if not exists 'aclresources '( 'Rsid 'varchar (64) not null, 'Access' int (4) not null default 0, 'Desc'

/******rbac******/drop table if exists p39_privilege;CREATE TABLE P39_privilege(ID mediumint unsigned NOT null auto_increment comment ' Id ',Pri_name varchar (+) NOT null comment ' permission name ',Moudle_name varchar (+) NOT null default ' comment

Create a few tables ~ simple explanation, tbl_post Blog table tbl_comment Comment table, tbl_user user table Tbl_tag Tag table run the following SQL directly. CREATE DATABASE/*!32312 IF not exists*/' yii '/*!40100 DEFAULT CHARACTER SET UTF8 */; Use

Personal suggestion: use the database character set whenever possibleUtf8(UTF-8), so that your data can be smoothly migrated, because the utf8 character set is currently the most suitable character set for conversion between different character sets,

Sharing the latest website creation (fiction site) (2) -- creating a database and a data table and creating a website -- The most important link in the backend of php development is to create a database and create a data table. because it has a

Seniors, seniors, I was troubled by the question of time, especially in need of your help, please help me! Attendance time storage format problem. I used the bigint to store the timestamp. Limit: Credit card before 9 in the morning, credit card

Author/Translator: ye Jinrong (Email:), Source: http://imysql.cnFor reprinting, please indicate the author/translator and the source, and cannot be used for commercial purposes. violators must investigate. 译者：叶金荣（Email:），来源：MySQL手册版本

Because the UTF8 character set is the character set that is best suited to implement conversions between many different character sets, although you may not be able to view the contents of the database correctly on command-line tools, I strongly

MySQL version: 5.6.24 I. scene One: Replace into operation on a table without a primary key or a unique key CREATE TABLE ' Student ' (' SID ' varchar (6) Not NULL,' Name ' varchar ' not NULL DEFAULT ',' class ' varchar not NULL DEFAULT ',' Score '

There are a lot of solutions on the Internet, I say a solution that I use: Http://hi.baidu.com/xiaefun/blog/item/87fd5f82e96a3eaa0df4d2cb.html dbhost = $host; $this->dbuser = $user; $this-> Dbpassword = $password; $this->dbschema = $schema;