MySQL

First, start ApacheThere are two ways1. Turn on network sharingOpen "System Preferences", "sharing", before "Internet sharing" that item to hit √.2. Open Terminal, enter sudo apachectl start You need to enter the password, enter the

Test Table SQL statementCreate TableA (IDintUnsigned not NULL Primary Keyauto_increment, nameChar( -) not NULL default "') Engine=MyISAMdefaultCharSet=UTF8;Create TableB (IDintUnsigned not NULL Primary Keyauto_increment, nameChar( -) not NULL

DescriptionWhen you turn on MySQL database master and slave, there will be a lot of files such as mysql-bin.00000* log, which will consume your hard disk space.mysql-bin.000001mysql-bin.000002mysql-bin.000003mysql-bin.000004mysql-bin.000005...There

Although the multi-table query, in the computer must class, the database, inside already big speaks, but this difficulty many teachers did not speak deeply to speak thoroughly. With you a lot of net pull, left connected to the right connected things,

How do I store music and picture files in MySQL?If you want to store binary data, such as image files and HTML files, directly in your MySQL database, then this article is written for you!I'll show you how to store these files through an HTML form

Slow Query Log1. The slow query log is logged when the query does not return results for a certain amount of time.2. The slow query log helps DBAs find SQL statements that perform inefficiently and help with database optimization efforts.3. The slow

1. Preparatory workFirst, you need to prepare 2 machines and install MySQL separately. My version here is 5.1.73,mysql database installation please refer to: http://www.cnblogs.com/tangyanbo/p/4289753.html Linux System for CentOS The machines were:

Modify File/etc/my.cnfThe port properties under [client] and [mysqld] need to be modified.Restart MySQLIf you turn on the Selinux,mysql will not start, you will see the following error in the log[ERROR] Can ' t start server:bind on TCP/IP

Today, when connecting to MySQL, found that always prompted to connect to localhost failed to find the reason, is the first two days the password has been illegally modified. Now do not know the root login password, and want to connect to the

By default, MySQL changes the port after it is not passed through the SELinuxPrompt startup error, then first look at MySQL error logBut I don't know the location of the MySQL error logFirst, change the SELinux mode to passive and then start MySQL

Without a statement, speak directly:The federated index in the Babysitter_account table is as follows (developing a federated index that the small partners have built themselves, did you find it inappropriate?) ）：KEY ' flag ' (' flag ', ' user_id ',

First, a new solution, including two projects: Ef6codefirstmysql.model (Dynamic Library project), Ef6codefirstmysql.tests (console application)Ii. introducing EntityFramework6 and MySql.Data.Entity packages to the solution through NuGet (two

MySQL Study Case--mysql Client connection failureSystem Environment :Operating system: RedHat EL6DB Soft:mysql 5.6.4-M7 The system installed the source package MySQL 5.6.4-M7 version, after starting the service, the client connection failed!

When the server is not running PHP, not installed phpMyAdmin, remote management of MySQL is necessary. Because it is set under CentOS, the title is added to CentOS, and the following commands should be OK under the Debian system. MySQL -u

MySQL joins columns, changes columns, deletes columnsALTER table: Add, change, delete table columns, constraints and other table definitions. View column: Desc table name; Change table name: ALTER TABLE T_book Rename to BBB; Add

Mysql Copy Tool1.percona-toolkit IntroductionPercona-toolkit is a collection of advanced command-line tools used to perform a variety of manual execution of very complex and cumbersome MySQL and System tasks, these tasks include: check

Original: http://guweigang.com/blog/2013/11/18/mysql-binlog-in-realtime/As is known to all, MySQL is the most popular Internet database (not one) ——————— for open source. In the early stages of development, many companies benefited from its

MySQL Packets larger than Max_allowed_packet is not allowedA system parameter for MySQL: Max_allowed_packet, whose default value is 1048576 (1M),Enquiry: Show VARIABLES like '%max_allowed_packet% ';Modify the value of this variable:

1. Modify/ETC/MY.CNF before installation, add DataDir =/data/mysql/and then execute sed-i ' s/skip-locking/skip-external-locking/g '/etc/my.cnf command , change the contents of the directory to your new directory2. After installationStop MySQL, move/

Three methods for copying table data and table structure in mysql When will we use a copy table? For example, if I operate on a table but are afraid of accidental deletion of data, create a table with the same structure in the same database and