MySQL

socket =/tmp/mysql.sock # Specifies a socket file for local communication between the MySQL client and server (the default is/var/lib/mysql/mysql.sock file under Linux) port = 3306 # Specifies the port on which MSSQL listensKey_buffer = 384M #

Solution 1:Add Unique Index on your table:ALTER IGNORE TABLE `TableA` ADD UNIQUE INDEX (`member_id`, `quiz_num`, `question_num`, `answer_num`);Solution 2:ADD Primry key in your table and can easily remove duplicates from your table using below

Installation of MySQL under Windows 1. Download Mysql-5.6.11-win32 and UnzipIf you unzip it to "H:\SoftWare\mysql-5.6.11-win32"2. Setting up the configuration filego to the Unzip directory and copy the My-default.ini copies of the My.inito modify a

##########MYSQL分库备份########################################!/bin/bashmycmd= "mysql-uroot-pjinyan123" #定义了mysql命令MYDUMP = "mysqldump-uroot-pjinyan123" #定义了mysqldump命令DATABASE = ' $MYCMD-e ' show databases; "| Sed ' 1d ' |egrep-v

Basic conditions:No indexMain Table TEST_0 data: 1 million Database engine InnoDbSub-table test_1...test_100 data per 10,000, altogether 1 million database engine InnoDbProcess:100 data is modified in the main table to calculate the time spentModify

Modify the/etc/my.cnf below four configurations, if not, add these four.Log-bin=mysql-binBinlog_format=mixedExpire_logs_days=7binlog-do-db=your_dbView BinlogMysqlbinlog--no-defaults mysql-bin.000001 | MoreRecovery Binlog./mysqlbinlog--start-date=

First, Login1. Local login: MySQL connection Local database, username "root", password "123" (Note: "-P" and "123" can not have space between)C: \>---p1232. Telnet: MySQL connection remote Database (192.168.0.201), port "3306", username "root",

Do not know in the CMD mode is not case-sensitive, I capitalized successfully, lowercase did not succeed, I do not know the spelling of the error, or case-sensitive!!??Method 1: Use the Set password commandMysql-u Rootmysql> SET PASSWORD for ' root '

Typical scenarios where indexes can be used in MySQL(1) Match full value;(2) The range of matching values query, the value of the index can be scoped to find;(3) match the leftmost prefix, using only the leftmost column in the index to find;(4) The

▲mysql UsersMySQL database has only one root user by defaultMySQL database saves user information in the MySQL database's UESR data sheet▲mysql User Management#创建一个新的用户CREATE user username identified by ' password ';Note: A new user cannot log in

I would not suggest richies answer, because is screwing up the data inside the database. You would don't fix your problem but try to "hide" it and not being able to perform essential database operations with the C rapped data.If you encounter this

3 Ameoba Installation Configuration?3.1 Installing the configuration JDK[Email protected] ~]# RPM-IVH jdk-7u67-linux-x64.rpm[Email protected] ~]# cd/usr/java/?modifying environment variables?[Email protected] ~]# vim/etc/profile.d/java.sh[Email

MySQL timed tasks are introduced from version 5.1, also known as temporary triggers, but unlike normal triggers, a normal trigger is an event triggered by manipulating every row of data in a data table, and it is triggered by a point in time or time

Mysql multi-Table random query optimization solution I have previously introduced the most Optimization for random queries on a single table. Today, a webmaster shares some methods and solutions for optimizing random queries on multiple tables,

How to recover lost or corrupted Mysql ibdata through frm & ibd Sometimes mysql does not back up data, or is accidentally deleted by the Data Administrator, or ibdata is damaged. How can we restore it? Don't be afraid, as long as some frm and ibd

Garbled characters in MySQL data migration If MySQL Data is transplanted from a lower version of mysql to a later version, it is prone to garbled characters when the transplanted data contains Chinese data. Many of them are migrated from MySQL4.x to

MySQLWorkbench query timeout (LostConnection) Solution When using MySQL Workbench for query, if the query statement or table is too complex and the query time is too long (generally 600 s), the Lost Connection error is reported. In fact, the query

Use of mysqlinnodb on Openwrt and related exceptions First, configure mysql in menuconfig, specifically in Utilities-> database-> mysql-server. In this way, you can compile it directly. However, innodb Storage engine is not supported by default. It

MySQL STRAIGHT_JOIN, mysqlstraight_joinProblem Recently, I was debugging an SQL statement that took more than 5 seconds to query. This SQL statement uses inner join to sort by time field (order ), an index (index name IDX_published_at) has been

Differences between mysql_unbuffered_query and mysql_query PHP mysql_data_seek () function Definition and usage The mysql_data_seek () function moves the internal result pointer. Syntax Mysql_data_seek (data,