MySQL

MySQL command displays all the categories available for queryingMysql>? Contents You asked to help in the category: "Contents" For more information, type ' help ', where was on E of the Followingcategories: account Management Administration

1. Unzip the mysql-5.6.26-winx64.zip to any location, e.g. C: \ 2. Set environment variables. 3.copy a copy of My-default.ini for My.ini, the following changes: # for advice The change settings see#

(1) About the configuration file pathSometimes I find that although I try to modify some variables of the configuration file, it does not take effect. It turned out that the modified file was not a configuration file read by the MySQL server.If you

Normally, copying and backing up tables is usually done directly by the IDE. But sometimes, some initialization of the data script, before operating the data, it is best to back up the structure of the Operation table, data, not error is placed in a

Environment: CentOS6.3 Database mysql6.5.26Edit/ETC/MY.CNFVi/etc/my.cnfRestart MySQLService mysqld RestartCreate user ' Mastj ' @ ' 192.168.1.16 ' identified by ' 123456 ';Grant Replication Slave on * * to ' mastj ' @ ' 118.123.199.12 ' identified

MySQL has not been updated for nearly one weeks. On the contrary, Linux is learning a lot. Maybe I'm emotionally more interested in Linux. But I'm not tired of MySQL, but once I put my energy into the same thing, it's hard to distract myself from

DescriptionA MySQL database server on the line suddenly loses power, causing a system failure to start, and after reinstalling the system, locate the previous MySQL database folder.Problem:Restore the previous MySQL database by copying the file,

A stored procedure (Stored Procedure) is a set of SQL statements that are compiled and stored in a database in order to complete a specific function. The user invokes the runtime by specifying the name of the stored procedure and the given number

ObjectiveSome of the feedback before several articles too theoretical lack of practical details, this article on more operability of the content bar.Note: This article is based on the background of MySQL, many of which are applicable to other

SQL Optimization Analysis Slow query SQL can be captured by Slow_log, and then reduced to IO and CPU usage (unreasonable indexing, unnecessary data access and sorting)When we face specific SQL, we first look at its execution planA. See if the

--Displays the version of the current serverSelect version ();--Displays the current date and timeSelect Now ();--Displays the current userSelect User ();--The creation of a database curly braces are required, square brackets indicate options,

In MySQL database, Key_buffer_size is the most influential parameter to the performance of the MyISAM table.The following myisam is the configuration of the primary storage Engine server:MariaDB [(None)]> show variables like ' key_buffer_size ';+----

1. Connect MySQLFormat: mysql-h host address-u user name-P user Password1.1. Connect to MySQL on this machine.First open the DOS window, then enter the directory Mysql/bin, and then type the command mysql-u root-p, enter the password prompt. The

In Mysql-procedure (Cursor,loop), the text in the Spam_keyword table is all split into the T table, and each line of words are not duplicated, the T-table can be used as a dictionary, only 1000 of a dozen characters, this time the T-table as a

First, if there is no nginx in the Yum source, you need to add the repository yourselfInstall Nginx's Yum source firstHttp://nginx.org/en/linux_packages.html#stable find the link to install:RPM-IVH

Method one: Stored procedures1. The stored procedure is as follows:delimiter $$DROP PROCEDURE IF EXISTSDataCREATE PROCEDUREDatainchIint)BEGIN whileI the DoINSERT intoGoodsVALUES("','Hammer Phone', i); SETI=I+1; END while;End$$Set @id=0; call

One, MySQL command line argumentsUsage:mysql [OPTIONS] [Database]//Command mode-?,--help//Display assistance information and exit-I,--HELP//Display Help information and exit--auto-rehash//Auto-complete function, like Linux inside, press the TAB key

Featured Books command: show Processlist;if it is the root account, you can see the current connection for all users. If you are a normal account, you can only see the connection you are occupying. show Processlist; only the first 100 are listed, if

1> the occurrence of semi-synchronous replication:By default, replication is asynchronous, that is, the client commits the transaction to the main library, and the main library writes the transaction to the storage engine and Binlog and returns it

MySQL adds fields to the method is not complicated, the following will give you a detailed description of the MySQL add fields and modify the fields and other operations to implement the method, I hope you learn to add fields in MySQL will be