MySQL

Create DATABASE nameCREATE TABLE CeShi1(Uid varchar (primary) key,PWD varchar (50),Name varchar (50),Nation varchar (50),Foreign KEY (Nation) references Nation (Code))Writing query statements requires attention:1. When creating a table, do not write

MySQL is a database management system, mainly to the database to increase, modify, delete, query, with case-insensitive characteristics (input in uppercase, lowercase can be)1. Basic commandsMySQL can log in directly through CMD, login command line:

about how to deal with large data volumes:1. Try to avoid using the! = or <> operator in the WHERE clause, or discard the engine for a full table scan using the index.2, to optimize the query, should try to avoid full table scan, first of all should

1. Install the dependent libraries required by the MYSQL server:bison* gcc* gcc-c++* autoconf* automake* zlib* libxml2* ncurses-devel* libtool-ltdl-devel*# rpm-ivhlibtool-ltdl-devel-2.2.6-15.5.el6.x86_64.rpmor:# yum Install Bison gcc gcc-c++

Navicat Connection Open Times 1862 error,There is no connection to MySQL to see, today when the connection found that the MySQL link is not on, the cmd in the execution of the action will also call you to set password, do set the password action

This article environmentMain Library: CentOS6.5 x64 192.168.0.65 mysql-5.6.29Library: CentOS6.5 x64 192.168.0.66 mysql-5.6.29Next: mysql-5.6 master-Slave synchronization configuration Example http://koumm.blog.51cto.com/703525/1764093the concept of

Transferred from: http://www.cnblogs.com/xrq730/p/4943660.htmlObjectiveMySQL provides a number of powerful, easy-to-use functions, using these functions, can greatly improve the user's management efficiency of the database, thus more flexible to

MySQL optimization (iii) –EXPLAIN Analysis of SQL statement execution efficiency Mushu posted 11 month ago (06-04) Category: Mysql Read (651) Comments (0) The explain command is the first recommended command to address

Category_search_name similar to the following0-123: Clothing Shoes and hats 0-123-137-202: Clothing shoes and hats-0-speed food-0 instant noodlesfirst-with the second-(the number between the:) is the first-level category ID (123)Substring_index

 http://blog.csdn.net/tonyxf121/article/details/8393545B+/-tree Principle B-tree Introduction B-tree is a multi-path search tree (not two-pronged):1. Definition of any non-leaf node up to only m sons; m>2;2. The number of sons of the root node is [2,

MySQL index creationI. What is an index?Indexes are used to quickly look for records with specific values, and all MySQL indexes are saved as B-trees. If there is no index, MySQL must start scanning all records of the entire table from the first

MySQL Learning note-Custom function comment syntax:MySQL server supports 3 kinds of annotation styles: From the ' # ' character from the end of the line. From the ' – ' sequence to the end of the line. Note that the ' – ' (double dash)

Reason: A period of time has been to the leadership, the database although one hours back up, but still very dangerous, if the MySQL server suddenly down, or disk failure, not only the MySQL site will be a great threat, and even if the recovery of

This article takes mysql-5.1.72-solaris10-i386.pkg.gz as an examplewhichmysql-5.1. the : MySQL version solaris10 : SunOS version i386. : SunOS machine CPU Model : Number of digits, no default 32-bitInstallation Machine

Because the completion of the underground garage management system, so the intention to learn JSP development ~Today is mainly "new Web site project +mysql Link", the work done before in this article: Tomcat server configuration, MySQL database

0. User management:1. New User:>create USER name identified by ' Ssapdrow ';2. Change Password:>set PASSWORD for Name=password (' FDDDFD ');3. Rights Management>show GRANTS for name; View name User Rights>grant SELECT on db_name.* to name; All

Full analysis of the lru module of the mysql kernel source code deep Parsing Buffer Pool (bufferpool Part 2) Liu's original article, CSDN first! Indicate the source for reprinting. LRU module components (1) Overall LRU Operating Mechanism To fully

Mysql High Availability LVS + KEEPALIVE + MYSQL, lvskeepalive1. Architecture Diagram    Note: (1) Mysql needs to remove the bind-address Configuration; otherwise, virtual ip access cannot be implemented. (2) Disable all linux

MySQL database lock mechanism-MyISAM engine table lock and InnoDB row lockLock concept in MySQL Different storage engines in Mysql support different lock mechanisms. For example, the MyISAM and MEMORY storage engines use table-level locks. BDB uses

How to exclude the specified database during MySQL backup. When you use the mysqldump command to back up data, -- all-databases can back up all databases. You can use ignore-table to exclude the specified table. However, mysqldump does not have any