MySQL

We often use a unique number to identify the record. The Auto_increment property of the data column can be automatically generated in MySQL. MySQL supports a variety of data tables, each of which has a different self-increment property, which

650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M02/29/FA/wKioL1OAQ53iojoBAAGdYP7VEHc107.jpg "title=" 46cad483-420b-4e86-b5db-6425929b28b8.png "alt=" Wkiol1oaq53iojobaagdyp7vehc107.jpg "/>0. http://soft.macx.cn/2068.htm1. Installing mysql-5.6.

First, common operation1. Duplicate table structure CREATE table t2 like T1Copy table data INSERT INTO t2 SELECT * from t12. mysql IndexALTER TABLE is used to create a normal index, a unique index, or a primary key indexALTER TABLE T add index index_

Now introduce the only configuration AS3 and Java Common Data class, this configuration is generally the data class only need to convert between AS3 and Java, and the database is not related. For example, in the data exchange between client and

1. Change the table method.Please use MySQL management tools such as: SQLyog EnterpriseIt may be that your account is not allowed to log on remotely, only on localhost. This time, as long as the computer in localhost using the MySQL management tool

AUTOSCRIPT project structure such as---autoscript.java for program entry---com.autoscript.object synchronization of AS3 and Java data classes---com.autoscript.database to synchronize AS3, Java, and MySQL table statements---COM.AUTOSCRIPT.MACRO

First, the development environment Win8.1 64-bit, VS2013, MySQL5.5.3764-bit the MySQL installation directory is: C:\Program files\mysql\mysql Server 5.5 Second, the configuration of the engineering environment First

i. Creating stored procedures and functions1. Create the basic form of the stored procedure:CREATE PROCEDURE Sp_name ([proc_parameter[,...]]) [Characteristic ...] Routine_bodyExample:Create a stored procedure named Num_from_employee delimiter

Today make a judgment insert used in MySQL on DUPLICATE KEY UPDATE, now Mark below!You can choose on DUPLICATE KEY Update if you want to insert the data and update the data if you do not have the data in the database.The on DUPLICATE key update can

Delete multiple table data in MySQLDelete deletes multiple table data, how can you delete data from multiple associated tables at the same time? Here's an in-depth explanation:1. Delete from T1 where condition2. Delete t1 from T1 where condition3.

Required Software:Httpd-2.2.22-win32-x86-no_ssl.msiPhp-5.4.5-win32-vc9-x86.zipMysql-5.5.27-win32.msi 1. Install Apache, modify httpd.confModify the httpd.conf file, the file is located under \apache2.2\confFind #loadmodule vhost_alias_module modules/

In order to prevent unscrupulous site crawler crawling articles, hereby identified, reproduced please indicate the source of the article. Laplacedemon/sjqMySQL permissions system tableMySQL's permissions-related information is primarily stored in

Business Scenario:The new slave is connected to master, and master is almost "killed" when the start slave is executed.Analysis: When a new slave is connected to master, a large number of binlog (hundreds of g) on the main library will be pulled to

Thanks to the original author, the article is very practical. Original link: http://www.blogjava.net/yjhmily/articles/336926.html================================================================Make a note:1. Delete MySQL1sudo apt-Get

1. Integral type MySQL data type Meaning (Signed) tinyint (m) 1 byte range ( -128~127) smallint (m) 2 byte range ( -32768~32767) Mediumint (M) 3 byte range ( -8388608~83

--mysql User and System variables-----------------------------2014/05/19User variablesYou can first save the value in a user variable and then reference it later, so that you can pass the value from one statement to another. User variables are

Inquire:show databases;Show status;Show tables;Desc Table-name;To change the root password:Method One: Mysqladmin-uroot-poldpassword password newpasswordMethod Two:Mysql-uroot-pUse MySQLUpdate user set Password=password ("newpasswd") where user=

Mysql installed in the LNMP one-click package enables Mysql logs by default. If the website reads and writes data to the database frequently, it may generate a large number of logs and occupy disk space, it is also possible that the idle space of

When we use php to process data, we will always encounter some troublesome things, such as: Two-dimensional arrays, one containing the content of the article classification table and the other containing the article list, it has an associated field,

I. Concepts of databases Database: a software system used to store and manage and use data. SQL: struct (structure) query (query) language (language) Structured query language: in fact, it is an international language standard. Based on this,