MySQL

CreateprocedureT_insert_table ()begin/** flag is wrong*/DeclareT_errorintdefault0; /** If a SQL exception occurs, the following operation will continue after setting T_error to 1*/DeclareContinueHandler forSqlExceptionSetT_error=1;--Error Handling/**

Back up data 2 o'clock in the morning every dayCrontab-e0 2 * * * mysqldump ${mysqldir}/bin/mysqldump-h$host-p$port-uadmin-p "$passwd"--events--flush-logs--master-data=2 --all-databases| gzip > ${dailybackupdir}/$date/allback.sql.gzScheduled tasks

1. First uninstall the system's own MySQL# yum Remove MySQL2. Installing CMakeDownload CMake Source code# wget http://www.cmake.org/files/v2.8/cmake-2.8.5.tar.gz# tar XZFV cmake-2.8.5.tar.gz# CD cmake-2.8.5#./configure(If you are prompted to install

DOS Down entry1, through the program of MySQL: MySQL 5.6 command line client directly into the MySQL commands;2, or through win+r--"input cmd, and then C: wait for a layer to find the folder to install MySQL run the Mysql.exe executable to run

After entering MySQL, you can see the character encoding problem of MySQL by typing the command status.The default is as follows:Server characterset:latin1Db characterset:latin1Client characterset:latin1Conn. characterset:latin1So in the development

MySQL > Show processlist;Out of several screens, no 1000 also have hundreds of, query statements to lock the table, hurriedly find the first locked thread_id, in the shell of MySQL execution.MySQL > Kill thread_id;The process of killing the

The origin of the problem: Download Python-mysql connector, but the use of the error is not mysqldb, online search to install Microsoft Express 10, after installation or not, and search solutions1. Download Mysqlclient 1.3.7Download MYSQLCLIENT-1.3.7

Always appears in MySQL ' > Single and double quotes are not paired MySQL connection matlab 1, go to MySQL website download http://dev.mysql.com/downloads/connector/j/(mysql-connector-java-5.1.37.tar.gzPut Mysql-connector-java-5.1.

1. First verify that the server is in a secure state, that is, no one can connect to the MySQL database arbitrarily.Because the MySQL database is completely password-protected during the reset of the root password of MySQLStatus, other users can

Write your own MySQL startup scriptScript one:#!/bin/SH. /etc/init.d/functions[$#-ne1] && {Echo "Usage:{start|stop|restart}"Exit1}start () {if[-e/data/3307/Mysqld.pid] Then Echo "MySQL is

1, to undertake the previous essay, because I use the RMP two kinds of trans-type.RPM-IVH mysql-server-4.0.14-0.i386.rpmRPM-IVH mysql-client-4.0.14-0.i386.rpmI found that there is no my my.cnf file under the/etc/directory under my Linux. That's what

General table data Less words are used graphical interface, looking more convenient.If there is more data in the table, it is very easy to get stuck with a graphical interface, and this is where the command line will be used.Exporting large amounts

1. mysql build library, build table2. Preparing the data file Cpu.txt1447836374319,169,0,01447836375346,498,0,01447836376346,250,0,01447836377347,0,0,01447836378347,497,0,01447836379347,0,0,01447836380347,498,0,01447836381348,0,0,01447836382348,498,0

1, configuration onLinux:Added in MySQL config file my.cnfLog-slow-queries=/var/lib/mysql/slowquery.log (Specify the log file location, can be empty, the system will give a default file Host_name-slow.log)long_query_time=2 (record over time, default

1. Backup command for the MyISAM engine:Mysqldump--user=root--all-databases--flush-privileges--lock-all-tables--master-data=1--flush-logs--triggers-- Routines--events--hex-blob >/home/data/full_dump.sql2. Backup command for the InnoDB

#!/bin/bash#auto make install MySQL and configure master and slave#by Csy 2015-11-17#Define variables++++++++++++++myl_package= "MySQL mysql-server mysql-devel php-mysql mysql-libs"judeg= ' cat/etc/passwd |grep mysql |wc-l 'Mys_dir=/var/lib/mysqlMys_

MySQL-optimized ICP (index condition pushdown: index push-down)ICP is an index optimization technology introduced in MySQL5.6. It can reduce the number of times the table is returned when the where condition is filtered by secondary indexes and the

MySQL basic paging Query Method and Its Optimization Today, an oracle database is generated to mySQL. Because the code is primitive and the database is accessed by JDBC, the paging query of the database cannot be found at once. Sorrow! First look at

MySQL-optimized ICPs (index condition pushdown: index push-down) and conditionpushdown ICP is an index optimization technology introduced in MySQL5.6. It can reduce the number of times the table is returned when the where condition is filtered by

If you are using an orm, do you still need a relational index or An orm index? In short: Yes, you still need to understand indexes, even using object relational ing (ORM) tools. The ORM tool can generate logical and legal queries (most of the time)