MySQL

If you encounter mysql-libs-5.1.73-3.el6_5.x86_64 conflicts with a file from the package Percona-server-server error, there are two situations that cause this problem:1) Uninstall the Mysql-libs package preinstalled by the operating systemRpm-qa |

The beginning: The question of whether MySQL level two indexes are automatically added to the primary key is questionable, and today it's time to analyze a pair of 5.5 and 5.6:Mysql> select version (); +------------+| version ()   |+------------+| 5.

Objective:The operator reflected that a single submission had jammed and the page had not been returned.1, just started to suspect that the application server or DB pressure is too high hang, immediately to check the application server and the load

Master-master Mutual Primary Preparation1: According to the master and slave configuration steps to configure Masterb to Mastera from the library;2: Make sure that Masterb is not written, get its sync point on Masterb by the show Master Status

Isolation Level Concepts:First, read UNCOMMITTED (read-uncommitted)When the transaction isolation level is set to read-uncommitted (Read UNCOMMITTED), in this state, the data updated by one session is immediately visible to the other session, even

Today, the development of a requirement, you need to import the data in Excel into MySQL, originally wanted to import Excel into CSV format automatically has a comma, so with a comma as a delimiter, and then copy the data to a text file using MySQL

　　MySQL provides standard SQL pattern matching and an extended regular expression based on Unix-like utilities such as VI, grep, and SEDpattern-matching format.The pattern matching of SQL allows you to match any single character with "_", while "%"

Because the project needs to be based on the MySQL table data generation INSERT INTO statement, found some out-of-the-box code, the original author who did not know, but found that there is a bug, can not be applied, hence the code of others have

Title DescriptionWhen using SPRING+HIBERNATE+DBCP on Linux to connect to MySQL on this computer, an exception occurred:[ERROR] [2014-09-1614:00:59,343] [Com.ocyd.jeecgframework.core.common.exception.MyExceptionHandler]

The first part installs MySQLThe second section uses MySQL to manage metaInstall MySQLInstallationYum-y install MySQL Mysql-serverYum method installation requires the use of the network, can automatically continue to transmit, for the dependent

Http://www.jb51.net/article/38473.htmStart the command line first1. Run at the command line:taskkill/f/im Mysqld-nt.exeThe following operations are operating in the MySQL bin directory under some programs, if not configured environment variables,

MySQL binary package installation and customization BasedirPreface: MySQL Binary package, fixed dead. Basedir to be /usr/local/mysql/, But many people like to customize the directory, like I like to put /opt/app/mysql Data Catalog likes to be

I thought it was going to be a smooth finish.MySQL installation package 64-bit,

1. Check if the system has MySQL       use command:       #rpm-qa | grep mysql &NBSP 2, uninstall the installed MySQL       uninstall MySQL command as follows:         #rpm-e-- Nodeps  mysql-libs-5.1.61-4.el6.x86_64       To remove all

#repdelay. sh#!/bin/sh#[email protected] #查看复制延迟具体多少event #set mysql evnmysql_user_master=root mysql_pass_ master= ' password ' mysql_host_master=192.168.2.188mysql_user_slave=root mysql_pass_slave= ' password ' MYSQL_HOST_ Slave=192.168.2.14tmpfile_

1. CREATE USERGrammar:CREATE USER 'username ' @ ' host' identified by ' password ';Example: CREATE USER ' dog ' @ ' localhost ' identified by ' 123456 ';CREATE USER ' pig ' @ ' 192.168.1.101_ ' idendified by ' 123456 ';CREATE USER ' pig ' @ '% '

method One:MySQL provides command-line arguments to skip access control by starting the MySQL server with this command at the command line:safe_mysqld--skip-grant-tables&To skip MySQL access control, anyone can enter the MySQL database as an

same Show The timestamp column is displayed in the same format as the datetime column. In other words, the display width is fixed at 19 characters, and the format is Yyyy-mm-dd HH:MM:SS. different Range datetime Retrieves and displays datetime

MySQL basics-create a table 1. CREATE a new table create table (Domain Name Data Type column option [...]); Mysql> create table customer (c_id char (5) primary key, c_name varchar (20), c_birth date, c_sex char (1) DEFAULT '0 '); Main options

[MySQL] using Profiles to view the execution time consumption of the create statement 1. view the status value of profiles1. Check whether profiles is enabled. By default, profiles is disabled. Mysql> show variables like '% pro % '; I checked