MySQL

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Temporary tables can be very useful, in some cases, to maintain temporary data. The most important thing to know is that the temporary table is that they will be deleted when the current client session terminates When you create a temporary table,

Usually encountered this situation, are Slave binlog bad, on the Slave DB of the data to solve, but this encounter is Master's Binlog bad, a little bitter ~ The error message is as follows: last_io_errno:1236Last_io_error:got fatal Error 1236 from

State management commands are divided into LNMP State management commands and Lnmpa State management commands, Lnmpa represents Linux under Nginx, MySQL, PHP, Apache, such as the Web server architecture, is the combination of lamp and lnmp the

REPAIR table Syntax REPAIR table ' table_name ' repair form REPAIR table is used to repair damaged tables Using in Linux REPAIR TABLE ' table_name ' pre_forum_thread Tips Xt.pre_forum_thread Repair Error 1 when fixing table

The MySQL database provides a number of functions including: Mathematical functions; String functions; Date and time functions; conditional judgment function; System Information function; cryptographic functions;

PHP5 version, 5.2, 5.3, 5.4, 5.5, afraid to keep up with the times, the new server directly on 5.5, but the program appears the following error: Deprecated:mysql_connect (): The MySQL extension is Deprecated And will is removed in the Future:use

In the daily MySQL operations, it is often to query the current MySQL executing SQL statements and other running MySQL-related threads, which is used in the MySQL processlist command.Mysql> show processlist; //Query the SQL statement being

ObjectiveMMM (master-master replication managerfor mysql,mysql primary master Replication Manager) is a flexible script that is based on Perl and is used to monitor and fail-over Mysql replication. And can manage the configuration of MySQL

An OLTP performance comparison test was previously done: SAS vs SSD various modes MySQL TPCC OLTP comparison test results, this time to do the OLAP comparison test.The comparison test results are shown below:650) this.width=650; "Src="

Upgrade MySQL5.6.18 to 5.7.11 on rhel7.2This time using the binary package to upgrade with the Out-place method.1. Backup DataThe backup is heavier than everything!Various backup methods Mysqldump, CP .....2. Upload 5.7.11 Package and unzip[Email

Method 1 : with SetPassword CommandMySQL -urootmysql> SET PASSWORD for ' root ' @ ' localhost ' = PASSWORD (' Newpass ');Method 2 : With mysqladminif Root Password has been set, using the following methods mysqladmin-u root password

Anatomy of a MySQL database transactionA transaction is a set of atomic SQL queries, which is an independent execution unit. Statements within a transaction are either successfully executed or all failed to execute.1, the standard characteristics of

Database transaction isolation level and dirty read, phantom read, non-repeated read, transaction level I. database transaction isolation level   There are four database transaction isolation levels, from low to high: Read uncommitted, Read

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The cause of this problem is:The number of connections exceeds the value set by MySQL. It is related to max_connections and wait_timeout. The larger the value of wait_timeout, the longer the idle waiting time for the connection, which leads to the

I have always been interested in Mysql database/table sharding, but I am still at the stage of interest and have not encountered any applicable scenarios. Life is short. Instead of waiting for an opportunity, you can create it yourself. After a

If you use pip install MySQL-python to install MySQL, you may encounter the following problems:1. Error message: EnvironmentError: mysql_config not foundThis is because the local host is a Mac OSX system and MySQL is installed in the MAMP

Found a very convenient toolMyCliMyCli is a MySQL command line tool that supports automatic completion and syntax highlighting. It can also be used for MariaDB and Percona. Use prompt_toolkit to compile mycliWhen you enter SQL keywords, tables and