MySQL

A MySQL master-slave BuildSlightlyA setup hosts parsing[[email protected] conf]# vi/etc/hosts (three servers same add the following)192.168.31.2 M1192.168.31.3 M2192.168.31.4 slave1Two sets the name of each server corresponding to the Hosts file

What is the storage engine? For a database, the storage engine is the module or function that implements the data structure definition, storage and query of the database.Different databases have different underlying storage mechanisms, which are

SELECTFREIGHT_EFCL_INVENTORY_ID,FREIGHT_EFCL_ID,Closing_date,Sailing_date,Shipping_space_total,Shipping_space_remain,Shipping_space_usedFromFreight_efcl_inventoryWHERE1=1andFreight_efcl_id=#{freightefclid}and Sailing_date >=DATE

Reference: MySQL change data file directory and My.ini location.1. Find the My.ini location, and you can get the My.ini path by viewing the executable file path, which corresponds to its properties, through the MySQL startup entry for the Windows

CREATE TABLE Join_teacher (ID int primary KEY auto_increment,T_name varchar (TEN) is not NULL,Gender enum (' Male ', ' female ', ' secret ') not NULL) engine InnoDB character set UTF8;INSERT INTO join_teacher values(1, ' Han Xin ', ' Male '),(2, '

about PHP read MySQL database when garbled method of resolutionWhen PHP reads MySQL, there are several places involved in character sets.1. Specify the character set of the database table when the database table is created. For example

SELECT[All | DISTINCT | Distinctrow][High_priority][Straight_join][Sql_small_result] [Sql_big_result] [Sql_buffer_result][Sql_cache | Sql_no_cache] [sql_calc_found_rows]select_expr [, select_expr ...][From Table_references[PARTITION

Prepare the software first:Apache official: Apache_2.0.55-win32-x86-no_ssl.msi, more versions here;PHP Official: Php-5.0.5-win32.zip, more images, more version download;MySQL official: mysql-4.1.14-win32.zip, more images, more versions to

InnoDB this kind of engine, and the MyISAM engine difference is very big. In particular, its data storage format and so on.For the data structure of INNODB, there are two conceptual problems to be solved first: the shared tablespace and the

1, the use of the deposit process, a lot of similarity to delete, update, new and other operations became easy, and later also easy to manage! 2, stored procedures because the SQL statement has been pre-programmed Yi, so the speed of the run is

/*The first step is to create the following two log tables*/ CREATE TABLE' slow_log ' (' start_time ' )timestamp not NULL DEFAULT Current_timestamp on UPDATE Current_timestamp, ' user_host ' Mediumtext not NULL, '

BackgroundRecently in the company to do data migration work, using MySQL database in the test environment simulation data migration, in the process of migration testing need to do data backup and recoveryMySQL data backup and recovery is relatively

The recently developed iOS project, because of the need for user text storage, naturally encountered an issue where emoticons such as emoji were supported by MySQL DB. Troubled for a few days, on the verge of desperate abandonment, finally completed

To modify the MySQL database password via the MySQL command line, here is a detailed description of how to use the MySQL command line to modify the password.Format: Mysqladmin-u username-P Old password password new password1. Add a password to root

For the MySQL database garbled problem, there are two cases:1. MySQL database encoding problem (set when building the library).2. Link the URL encoding setting of the MySQL database.For the first question, the current personal discovery can only be

Introduction: Issues that occur on the local database execution of modifications the bank card is not error-free but online execution errorfound that the table is not found, the table name should be card_cardinfo, but there is no problem locally,

The quickest way to kill the lock process is to restart MySQL, like in your case, with more than 1000 SQL locked, preferably a rebootIf I do not allow a restart, I provide a shell script that generates a Kill ID command to kill the lock thread, as

It is normal to use MySQL on a PC, but porting to the ARM board always prompts you not to load the MySQL driver. No matter where I put the library file, I can't use it. When looking for information, inadvertently found an article, finally can use

MySQL provides standard SQL pattern matching, as well as an extended regular expression pattern matching format based on Unix utilities like VI, grep, and sed.First, SQL modeThe pattern matching of SQL allows you to match any single character with "_

In the process of MySQL database deployment, after installing the MySQL software and configuring the MY.CNF configuration file, you need to create a MySQL instance.MySQL 5.5 Instance creation is complete, default will have the login user name and