MySQL

Conditional statementsdelimiter \\CREATE PROCEDURE proc_if ()BEGIN      declare i int default 0;   if i = 1 THEN       SELECT 1;   ELSEIF i = 2 THEN       SELECT 2;   ELSE       SELECT 7;   END IF;END\\delimiter ;Looping statementsWhile

MySQL--MariaDB--Percona-serverMysql:oracle,Commutity: Community Edition 5.5 5.6 5.7 8.0MariaDB:5.5 10.xPercona:Percona-serverInnoDB-XtraDBXtrabackupPercona-tools:Storage Engine:Engine: Also known as table type, table-level concept, it is not

License-based now, we have not bundled MySQL database into confluence. You need to have your database driver available in confluence: Stop confluence. Access the Database JDBC Drivers page and download the correct driver. The driver files

1. Download the MySQL5.7 version, install the official version of the Windows Installer on the Internet: https://dev.mysql.com/downloads/windows/installer/5.7.htmlInstall the selected development development version, the default installation on the

mysql-As with Nginx and other features of multi-instance, it is simple to open a server on a number of different service ports (3306,3307) simultaneously run multiple MySQL service processes, these service processes through different sockets

MySQL seems to be starting from 5.0.2 version to support the function of the trigger, this blog to introduce the trigger, first of all, or talk about the concept of something:What is a triggerA trigger is a database object that is related to a table,

You see this article from HTTP://WWW.CNBLOGS.COM/AYANMWReprinted from: http://blog.csdn.net/daydreamingboy/article/details/6310907Analyze the length of the MySQL data typeMySQL has several data types that can limit the "length" of a type, with char (

# # MySQL Database# # # Knowledge Points:1. Single-table query2. Sub-query3. Linked Table Query4. BusinessBefore we make a query, we need to build the relational table and insert some data into the data table. Prepare for the query operation.#####

Background:? Today, say brother in the group asked the master-slave between the 1032 error, after using the Pt-slave-restart jump after another 1062 errors, how to quickly deal with.Problem Resolution:? 1032 Error: The Binlog passed by the main

1. Date and timeDate and time types are also very important in the database, such as we have a new user in the database, we should store the user join time, convenient for future queries.There are, for example, when we record the log, who operates

: Network Disk Download"Php+mysql+dreamweaver Dynamic website construction from the beginning to the mastery" according to the novice from the introduction to the proficient learning process, from the actual application of the PHP Script Language

Environment Python version: 3.6.5 (V3.6.5:F59C0932B4, Mar 2018, 17:00:18) [MSC v.1900 bit (AMD64)] Pymysql version: 0.8.1 Code#encoding: utf-8#author: walker#date: 2018-07-26#summary:  Printing  MySQL/MariaDB  All library names,

STRCMP (str1, STR2)Compares two strings if the two strings are equal to return 0 if the first argument is less than the second parameter in order of the current sort to return-1, otherwise returns 1.mysql> SELECT STRCMP (' MOHD ', ' MOHD '); +-------

WIN10 installing the MySQL process && linking process && backing up and importing data &&grant commandsFirst, installationThe latest version 8.0 downloaded at the beginning of the MySQL official website (https://www.mysql.com/downloads/ ), causing

Import requestsFrom lxml import etreeImport reImport PymysqlImport timeconn = pymysql.connect (host= ' localhost ', user= ' root ', passwd= ' 123456 ', db= ' mydb ', port=3306,charset= ' Urf8 ')cursor = Conn.cursor ()headers = {' user-agent ': '

MySQL has two storage engines:InnoDB and MyISAM, and the following table is a simple comparison of the two engines MyISAM InnoDB The difference in composition: Each myisam is stored as three files on disk.

Reference Source: https://www.cnblogs.com/da19951208/p/6403607.html 一：下载Navicat for MySQLGo to Navicat for MySQL download, select the downloaded version as needed, I choose Windows 64bit, choose one of the image address download.　　　　　　Two: Install

Reference Link: http://mp.weixin.qq.com/s?__biz=MzA5NDY0OTQ0Mw==&mid=403404979&idx=1&sn= 27d10b6da357d72304086311cefd573e&scene=1&srcid=04131x3lqlrdmyocntcqwf6n#wechat_redirectThere are many articles on the floor error, but are the use of statements,

Recent self-learning database MySQL. Then there is a question. has not been the solution. The relevant information was queried. Finally, there is no solution.My question is "use foreign key constraints", and then I don't understand the word "foreign

CentOS 7 installation of MariaDB 10 and related configuration, centosmariadb Step 1: Add MariaDB yum Repository Add the MariaDB yum configuration file MariaDB. repo in the/etc/YUM. repos. d/directory of the CentOS operating system. Vi/etc/yum. repos.