MySQL

Using System;Using System.Configuration;Using MySql.Data.MySqlClient;Summary description of Testdatebasepublic class Testdatebase{Public Testdatebase (){//TODO: Add constructor logic here//}public static void Main (string[] args){mysqlconnection

Install MySQL directly using sudo apt-get install MySQL, set the root password, use the Mysql-uname-ppassword login Execute SQL statement command using Mysql-uname-ppassword- DdatabasenameSave the execution result of the SQL statement

1. The role of the database: storing data.The database stores data differently from other means of storage:1. Can store large amounts of data2. Data is not lost3. Security4. Sharing5. Easy to find data2. History of database development:1. File

All MySQL columns can use the index. Using indexes on related columns is the best way to improve the performance of select operations. Defines the maximum number of indexes and the maximum index length per table based on the storage engine. All

Write in frontIt's all right. Under the study, the log file is written to the MySQL database, because the new company uses the database is also MySQL, the project needs to write log information to the database, there is no way to study the next. In

1. Open the MySQL profile My.ini, add the skip-grant-tables to the end of the file, or add it to the bottom of [mysqld] (directly added to the My.ini file at the end of the pro test can, but in [mysqld] I have not tried, Now this file as long as

All MySQL column types can be indexed. The use of indexes on related columns is the best way to improve the performance of select operations.First, prefix indexfor char and varchar columns, you can index the prefix of the column. This is faster and

Ubuntu build MySQL Reference http://www.cnblogs.com/wuhou/archive/2008/09/28/1301071.html1. sudo apt-get install Mysql-server\You need to make the root password password.2. vi/etc/mysql/my.cnfComment out binding-address=127.0.0.13. If you need to

Just started to learn MySQL and PHP, in this record to learn the little bit, but also hope to share with you some of the knowledge learned. 1.PHP connect to the MySQL database, you can connect to the database by the following methods (if your

Previously encountered MySQL local can connect but remote connection problem, no record, today on the Ucloud cloud on the new application on the server encountered this problem, record the resolution process.1. Troubleshoot network or firewall

Mapping type Java type Standard SQL field type Integer int or Java.lang.Integer INTEGER Long Long or Java.lang.Long BIGINT Short Short or Java.lang.Short SMALLINT

1, first need to modify the MySQL database configuration file My.ini, this file is placed in the MySQL root directory. Look for the Default-character-set property under this file and change its value to UTF8 ( Note: Not utf-8, also note case ), You

1. Compiling the EnvironmentVisual Studio 2013Cmkake 3.1.3 (note version, in order to support vs2013)Bison 2.4.1MySQL 5.6.232. Install CMake, bison Note You may need to add the bin directory for CMake and bison to the PATH environment variableNote:

Description: Sometimes you need to export the tables in your database to PowerDesigner for easy viewing.One: Download MySQL ODBCTwo: Configure an ODBC data sourceThree: PowerDesigner Connection databaseFour: PowerDesigner Export data1.1 mysql ODBC

MySQL version: 5.6.23-enterprise-commercial-advanced, using RPM installationlinux:red Hat Enterprise Linux Server release 6.3 (Santiago)First, if it is Linux under the RPM package installed MySQL, the modified method is as follows:The default data

This section describes how to install and configure MySQL.1 Installing the MySQL databaseThis section takes mysql5.1.49 as an example of the installation process for MySQL databases.Step 1 log in to the server as the root user.Step 2 Upload the

1.log error log:-org.hibernate.exception.jdbcconnectionexception:the last packet successfully received from the server was 51,999,860 mi Lliseconds ago. The last packet sent successfully to the server was 51,999,860 milliseconds ago. is longer than

(13) Process Control in mysqlOverview In mysql, you can use the if/case/loop/leave/iterate/repeat/while statement to control the process. If statement The if statement is similar to the if statement in the advanced language (c/c ++/php/java. if

MYSQL binary installation + XFS 1. prepare the partition yum install xfsprogs [root @ ycdatadbsupport yum. repos. d] # mkfs. xfs-f-I attr = 2-l lazy-count = 1, sectsize = 4096-B size = 4096-d sectsize = 4096-L data/dev/sdbmeta-data =/dev/sdb isize =

Mysql optimization Summary (1) I. SQL _mode mode of mysql: (1) This mode means that the SQL mode can control server operations, and the SQL mode exists at the global and session level. If you want to know the current value of global or session-level