MySQL

Defines an enum or set type that can constrain the value deposited.The value in the enum must be one of the values defined in the Value column, such as enum (' A ', ' B ', ' C '), which can only be deposited as ' a ' or ' B ' or ' C ', if it is

Create a new table under a databaseCREATE TABLE TT (ID INT not NULL PRIMARY KEY auto_increment,//Main table index, self-increment' Name ' VARCHAR (20))Storage modeALTER TABLE engine = InnoDB;----------------------------------------------------------

This week I learned about PHP and MySQL lap-up below to share with you:1. Account registration, Forum post ...Idea: Submit to php page via form form, PHP page insert data into MySQL;2. Account LoginIdea: Form submits data to php,php by submitting

For example, we want to back up a database named Linux that already exists in MySQL, using the command mysqldumpThe command format is as follows:[Email protected] root]# mysqldump-u root-p linux >/root/linux.sqlEnter Password: Enter the password for

--Preface: Recently, because the project needs to use Mysql,mysql never used, although this belongs to small and medium-sized enterprises, network companies use, the main point is that it cross-platform type, and the purchase cost is lower, up to

Here, because my MySQL installation is under the path of the D drive my sql\mysql server 5.6, so the following paths start with D:\MY sql\mysql server 5.6Configuring the MySQL environment in VSInclude directory:D:\MY Sql\mysql Server

The Ifnull function is one of the most important functions in the MySQL database, and the following is an analysis of the use of the function, which I hope will help you.The following is a detailed description of the use of MySQL ifnull function,

MySQL stored procedure and function stored procedure DemoMysql>Delimiter// --here//for modifying the default delimiter;MySQL> CREATE PROCEDURESimpleproc (out param1INT) - BEGIN - SELECT COUNT(*) intoparam1 fromT; - END//Query OK,0Rows

1, create schema [database name] default character set UTF8 collate utf8_general_ci;--CREATE databaseThe CREATE schema is the same as creating database.2, create user ' [user name] ' @ '% ' identified by ' [user password] ';--Create usersPassword

Records that manipulate data tables in a MySQL database include: Record insertions, record changes, record deletions, and recorded queries. In simple terms, itIs the record in the data table additions and deletions to change. One insert record The

MySQL database management tool navicat for MySQL, not much like the graphical interface or inconvenient to use SQL. We can use this graphical interface database management tool to manage MySQL, this experience Nithya to briefly explain how to use

"0" README 0.1) This part of the text is described in the "MySQL must Know", designed to review"MySQL create field + data processing functions + summary data (aggregation function) + packet data" basic knowledge;"1" Create calculated fields1)

Mysqlbinlog -VVV log.000001# at154#160517 the: the: -Server ID -End_log_pos219CRC320x7439a004GTID last_committed=0Sequence_number=1SET @ @SESSION. Gtid_next='191f7a9f-ffa2-11e5-a825-00163e00242a:1'/*!*/; # at219#160517 the: the: -Server ID

InnoDB and MyISAM are the two most common table types used by many people when using MySQL, both of which have pros and cons, depending on the application. The basic difference is that the MyISAM type does not support advanced processing such as

MySQL stored procedures and function stored proceduresDownloadDemoMysql> delimiter//--here//for modifying the default delimiter;mysql> CREATE PROCEDURE simpleproc (out param1 INT), BEGIN    SELECT COUNT (*) into param1 from T;      End//query OK, 0

When you reply to the PSC file in MySQL only one step at a time, first build an empty database in the Navicat, and then click on the backup = = "Reply backup =" To find the psc file = = "Note at this time do not rush to click Start,Look at the tab

Brief introduction:Mysql parameter optimizationOne, Mysql source code compilation parametersShell >Yum-YInstall GCC GCC-c++ MakeCMake Ncurses-devel zlib-devel Bisonshell>

Original address: http://www.it165.net/database/html/201403/5678.htmlMySQL ClusterCluster/cluster: Provide the same service with a group of serversLB cluster: Load Balancing cluster (multiple servers working together)Ha clusters: high-reliability

How to access the data in the mysql database in a Java program and perform simple operations, javamysql In the previous article, I introduced how to connect Myeclipse to the mysql database. Through this article, I will introduce how to access the

Simple use of Mysql (1). Use of mysql If you query these problems, IT means that you are a programmer who is or is preparing to engage in IT. For a programmer, the program that won't use the linux system isn't a good programmer! Because windows is