MySQL

Measure the size of each database and the total number of tables in the mysql database. The unit for calculating the total size of the real data and index data in each database is MB. The unit for calculating the actual data is MB, the size of the

In linux, mysql enables the remote access function. 1. After mysql is successfully installed, the remote access permission is disabled by default, only the local database can access mysql. The default configuration is actually in the user table of

Mysql stored PROCEDURE, with input and output SQL code DELIMITER //; CREATE PROCEDURE queryTotalNum (OUT totalNum INT, IN tableName varchar (40), IN conditions varchar (300 )) begin declare stmt varchar (2000); declare num int; if LENGTH (conditions)

Mysql noinstall installation 1. Download mysql-noinstall-5.1.68-win32 version 2. Go to the root directory and select a configuration file to change the file name to my. ini. My-huge.ini (for very big sites, too visitors at day or at some time. very

Centos6.0 64-bit MySQL 5.6.11 CMake installation and deployment I. download the required software linux wget to download the required software and save it to the/usr/local/src wget directory

Processing mysql subquery with the in keyword 1317 Error 1317 mysql query execution interrupted message content: query execution interrupted (database directly suspended) 1. symptom: (1) Mysql automatically suspends by using subquery statements in

Mysql data collection shell script #! /Bin/sh INTERVAL = 5 PREFIX = $ INTERVAL-sec-status RUNFILE =/home/benchmarks/running mysql-e 'show global variables '> mysql-variables while test-e $ RUNFILE; do file = $ (date + % F _ % I) sleep = $ (date + %

Recently compiled mysql Common commands --- view the master database log-binfile number and pos number mysql-uroot-pzqgame.com-e "show master status \ G" | cut-d: -f 2 | sed-n'2, 3p '--- View table information show table status \ G; --- mysql

Database multi-Table query is also called join query. This is a join query based on two tables. If one query requires operations on multiple tables, it is called join query, the result set or result of the join query is called the connection between

Mysql stored procedure: copying A column of Table A to table B is A stored procedure, copy the value of the avalue column in table A to the bvalue column in table B (assume that both tableA and tableB have the same column, named id) [SQL] create

Mysql mysqladmin: command not found, this is because the system will find the command under/usr/bin by default. If this command is not in this directory, the command cannot be found, what we need to do is map a link to the/usr/bin directory, which

My SQL Server → 5 transaction processing. the concept of transactions the transaction mechanism treats a group of database operation commands as a complete and independent operation sequence, that is, a group of commands either succeed or fail to be

MySQL solves SQL garbled characters on the Mac console 1. scenario: the mysql database is on the slave machine and the slave machine is on the LAN, again, the ssh standby machine (standby machine) is a bit similar to the following Architecture, so I

Mysql database read/write splitting Data Synchronization I used two xp (one master, one slave) systems to test successfully, and I also did a test on linux systems, however, I think the problem I encountered is the same. In xp, the problem can be

Linux MySQL password change 1) If you have not forgotten the password, you can use UPDATE to directly edit the user table to change the password: Enter the database mysql-u rootmysql> use mysql; mysql> UPDATE user SET Password = PASSWORD ('newpass')

Mysql Master/Slave database, database/table sharding, and other notes 1. mysql Directory:/var/lib/mysql default directory during rpm or yum installation: /usr/local/mysql 2. MySQL installed with the rpm package will not install/etc/my. the cnf file,

Install MySQLdb Module 1 in linux and check whether the MySQLdb module has been installed to go To the python command line. Enter import MySQLdb. If no error is reported, this module has been installed. Skip the following steps. 2, download the

Solve the Problem of garbled characters inserted into the MySql database during the last semester of junior year! Today, I helped you correct the problem. The website system needs to insert Chinese characters into the database. I changed the

Summary of common Mysql command line operations 1. Import an SQL file to the database: Use the source command, you must first log on to the mysql Console Mysql-u-p use xxxDatabase; source/test. SQL  2. Export the database table structure to the

Mysql uses the set names Method to Solve the garbled problem. We often use "set names utf8". Why can this code be used? Next, let's dive into the internal execution principle of set names utf8. let's first talk about the MySQL character set. In