MySQL

#创建用户Create user ' lin ' @ ' localhost ' identified by ' 123 ';#insert, Delele,update,select#级别1: For all libraries, under all tables, under all fieldsGrant SELECT On *. lin1 ' @ ' localhost ' identified by ' 123 ';#级别2: All the fields under the DB1

Add header file: #include /#include "afxdb.h"1 Download MYSQLODBC Driver2 odbc;dsn=vptest; Uid=root; pwd=123456; CHARSET=GBK (CHARSET=GBK) solve Chinese garbled problem!(MySQL character set UTF8)CString sqlstr = "SELECT * from admin;";CDatabase

Recently in the study of MySQL, see a lot of people in the construction of MySQL encountered many problems, we do not talk about the installation version of the configuration process, because the installation version of the configuration is very

InnoDB engineThe InnoDB is a transactional storage engine designed to provide high-performance services when processing large amounts of data, which, at run time, creates buffer pools in memory for buffering data and indexes.InnoDB Engine Benefits1.

Syntax: CREATE TABLE table name (field name 1 type [(width) constraint], field name 2 Type [(width) constraint], field name 3 Type [(width) constraint]); Note:1. In the same table, the field name cannot be the same as 2 . Width and constraints

MysqlinstallationInstallation Steps1, new userGroupadd MySQLUseradd-r-G MySQL MySQLcd/usr/local/---------------------------- Note the pathChown-r Mysql:mysql MySQLChmod-r 775 MySQL2, install dependent packagesYum Install libai*-y Yum Install ncurses-

MySQL的程序组成 1：客户端 mysql：客户端程序 mysqldump：mysql备份工具 mysqladmin：mysql管理工具 mysqlbinlog：二进制日志查询工具2：服务端 mysqld：服务端程序 mysqld_safe ：建议安全运行的服务端程序 mysqld_multi：多实例mysql程序 监听两类套接字地址 3：socket套接字的保存路径 （1）：RPM包安装的MySQL

Recently wrote yo A program need to use C language to connect MySQL, is based on Ubuntu, I wrote the following code (which includes the UDP Protocol section) in fact, we are through the system comes with the header file through the SQL statement to

SQL Optimization 10 recommendations1. It is a good idea to index fields that are frequently used (such as often to sort by these fields, or to search).2. The type of the field is as large as int or tinyint. In addition, the field is used as not NULL.

First, the database operationshow databases; List databasesUse database_name; Using the database_name databaseCreate Database Data_name; To create a database named Data_nameDrop database data_name; Delete a database named Data_nameSecond, table

question: Fuzzy query in MyBatis Mapper file:The MySQL CONCAT () function is used to concatenate multiple strings into a single string, one of the most important MySQL functions, and the MySQL CONCAT () function is described in detail below for your

/*How PHP connects to MySQL*//* $link = mysql_connect (' localhost ', ' root ', ');if (! $link) {Die (' Could not connect: '. Mysql_error ());}Echo ' Connected successfully ';Mysql_close ($link); * */*php How to select a database *//* $link =

Header ("Content-type:text/html;charset=utf-8");$account = $_post[' account '];$password = $_post[' password ');Echo 'Accounts: Password: ‘;function login ($account, $password) {$conn = mysql_connect ("localhost", "root", "root");$result =

Just a few days ago in the virtual host installed a MySQL5.7, conveniently configured a password, today directly forget (embarrassing face). "), so think about the way to change the password to paste it, in case a friend forgot the password to spare.

mysqldb:http://sourceforge.net/projects/mysql-python/After the download is uncompressed and placed in the%python_home%/lib/site-packages directory, Python will automatically find the package.MySQLdb is basically the Python version of the MySQL C API,

I've always felt a lot of trouble installing MySQL under Linux because it was a bit dizzy when it was installed because of a complicated configuration. Today, you need to connect MySQL with QT under Linux. The installation is equipped with a set.1)

Connection database: Mysql-h localhost-u root-p 000000Exit: Exit;    \q; QuitSET foreign_key_checks = 0; Disable foreign keysIndicates that the current command is not executing or waiting for command execution to confirm;\c used to remove the effect'

With this function of Find_in_set. We can design one such as: A mobile phone is a smart machine, but also the andriod system.For example: There is a product table has a Type field, he stores the product (cell phone) types, there are 1, intelligent

MySQL stored procedure solves the problem of array parameters and cursors cursorThe project encountered batch data processing, using hibernate to come out too slowly, modified as a stored procedure.The first version was modified to apply

Basic Mysql operations and Data TypesGo to mysql: mysql-hlocalhost-uroot-p; mysql-uroot-p password; view the help document: help to view the database name (s); create database: create database database_name; create databse if not exists