MySQL

1. export mysqldump-u username-p -- default-character-set = latin1 Database Name> exported file name (the default database encoding is latin1) mysqldump-u wcnc-p smgp_rj_wcnc> wcnc. sql2. export a table mysqldump-u user name-p database name Table

MySQL alter statement usage Summary 1: delete a column alter table Name DROP column name 2: add alter table name ADD column name int not null comment 3: modify the column type information alter table name CHANGE column name new column name (this can

Mysql adds columns, modifies column names and column attributes, deletes column statements mysql modifies table names, column names, column types, adds columns, and deletes alter table test rename test1; -- modify the table name alter table test add

1. mathematical functions are used to perform complex arithmetic operations. MySQL supports many mathematical functions. If an error occurs, all mathematical functions return NULL. (1) greatest () and least () functions are commonly used in

Debian6 configure Mysql cluster Mysql version: mysql-cluster-gpl-7.1.14-linux-i686-glibc23.tar.gz Operating System: Debian6.0 Virtual Machine 192.168.225.131 (MGMD) 192.168.225.small (NDBD) 192.168.225.134 (NDBD) 192.168.225.135 (MySQLD) Small1.

For MYSQL event height server, check whether the event scheduler show variables like 'event _ scheduler 'is enabled. For www.2cto.com, set global event_sched = 1. Create event Syntax: create event [if not exists] event_nameON SCHEDULE schedule [on

Adjust the MYSQL checking rule gbk_bin to binary storage. gbk_chinese_ci is case-insensitive. server adjustment [mysqld] default-character-set = gbk # add this item to MySQL 5.5 -- default-character-set is removed in MySQL. default-collation =

MySql stored procedure-3. Variable-related links: MySql stored procedure-1. Basic knowledge of SQL stored procedure http://www.bkjia.com/database/201208/148790.html ; MySql stored procedure-2. Creation of the first MySql Stored Procedure

After MySQL is installed in rpm mode in Linux, the default value is: Database Name and table name \ table alias \ variable name are case-sensitive and case-sensitive methods: 1. use the root account to log on to/etc/my. cnf or/etc/mysql/my. add the

The default value of mysql does not support functions and the default time is set. Java code because the default value of the current MySQL field does not support functions, it is impossible to set the default value in the form of create_time

Error: Cannot create Windows service for MySql Error: 0 solution Error: Cannot create Windows service for MySql. Error: 0:This problem occurs when you have not stopped and uninstalled an existing MySQL service and re-installed or upgraded MySQL

MySql database Introduction 1. database-related concepts Dbms: database manager system database management system, that is, database service programs. Generally, the installation of a database is the installation of a dbms. Only the database system

Mysql index considerations mysql optimization can be y-optimized from the selection of hardware devices, operating systems, database structure design, SQL queries, and applications, here, we will only optimize the database design and query

Mysql http://www.jb51.net/softs/2193.htmlThe following is an example of MySQL installation. It is installed using an executable file! Open the mysqlinstallation file mysql-5.0.27-win32.zip, decompress the file, and run setup.exe. The following page

Record the mysql master configuration 1. First add the replication mysql account: www.2cto.com grant replication slave, replication client, RELOAD, super on *. *'Replicate' @ '10. 10.1.69 'identified BY 'softc123'; flush privileges; 2.

Mysql (14) usage of the cursor links: Mysql (1) Installation of mysql http://www.bkjia.com/database/201210/162314.html Mysql (2) Database Operations http://www.bkjia.com/database/201210/162315.html Mysql (3) operations on Data Tables

In centos, MySQL 5.5.11 CMake Installation notes the latest mysql versions require cmake compilation and installation. It is estimated that this method will be used in later versions. Therefore, we will record the installation steps and procedures

Mysql trigger and stored procedure Test 1. to test the trigger and stored procedure, first CREATE a simple TABLE: www.2cto.com create table 'airuser' ('userid' int (11) not null AUTO_INCREMENT, 'username' varchar (128) not null, primary key ('userid'

Backing up mysql has always been a headache for many friends, especially by time period. Today I will teach you how to back up mysql database files with one click every day using graphic tutorials. 1. Create a batch file and save the following code

MYSQL Getting Started: Link to basic transaction processing: MYSQL Getting Started: basic operations http://www.bkjia.com/database/201212/173868.htmlMYSQL Entry 2: Search Using Regular Expressions