MySQL

1. Download the installation packagehttp://dev.mysql.com/downloads/mysql/#downloadsIt is recommended to download the TAR package (Http://cdn.mysql.com//Downloads/MySQL-5.7/mysql-5.7.12-linux-glibc2.5-x86_64.tar) for the common installation method.2.

Regular expressions are also supported in MySQL and usually have good results, and the usual regular ones are as follows:Select * from where ' Regular Expressions ';1. String starting with Xiaomi or ending with 06Select * from where ' ^xiaomi|06$ '

1. Login official website http://dev.mysql.com/downloads/mysql/Download the installation package (MySQL installation package is divided into two types, one is MSI format, one is the zip format)Note: MSI format is not described here, just next can be

Took over a new requirement check the company all the library table redundant index, save code reuse.#!/usr/bin/python2.7#-*-Coding:utf-8-*-#[email protected]Import MySQLdbImport SysImport OSImport Time,datetimeImport loggingImport MysqlcommonPath =

Modify the contents of a field for use in EnglishFirst, explain the function used:CONCAT (STR1,STR2)Character Join functionUPPER (str)Change string to uppercaseLOWER (str)Change a string to a lowercase letterLENGTH (str)Determining the length of a

　　Before starting the MySQL paging functional component, it is necessary to have a certain reusability. First in the project in the Views folder right click New Name _paginationcomponent.cshtml, here HTML and CSS I use the bootstrap paging component,

In the process of using MySQL often for a variety of reasons, usually to MySQL backup, optimization and other operations to write scripts to facilitate management. If you want to write a script, then you have to use the option parameters of the

QC (query cache) to the operation of the database statement cache, the next time in the same operation, will be cached force lookup, in fact, this function is only suitable for frequent and the same operation statement, so the use of the scene is

1. Storage structureMyISAM: Each MyISAM is stored on disk as three files. The first file name begins with the name of the table, and the extension indicates the file type. frm file stores the table definition. The data file has an extension of. MYD (

Basic configuration you need to look at the following 3 configuration items frequently. Otherwise, it may soon be a problem.Innodb_buffer_pool_size: This is the first option you should set when you finish installing InnoDB. The buffer pool is where

1. Display the table code:Syntax: Show create TABLE table name; The table name T1 is tested below.> Show CREATE TABLE t1;You can see that the encoding for this table is UTF8MB4650) this.width=650; "Src=" Http://s1.51cto.com/wyfs02/M02/88/1E/wKiom1fp7

mysql5.7 after installation, a random password is generated and you need to see Cat/var/log/mysqld.log when you log in.There's a randomly generated password inside.[Note] A temporary password is generated for [email protected]: 2hh,ukrypj-kAfter

First, what is the master-slave replicationCopy data from one database node to one or more database nodes (master node, slave node)Second, the principle of master-slave replication "Summary": stores the change action on the primary node to Binlog,

InnoDB table Space Extension:In the case of configuring shared tablespace, there will be a file ibdata1 under the MySQL data directory, and as the data grows, it continues to increase,Deleting a database does not reduce the capacity of ibdata1.This

MySQL Conditional judgment processingFirst, if I want to divide the salesperson into 5 groups, calculate the performance of each sales groupFirst, group the sales1 SELECT *,2 Case3 whenSalespersoninch("Ding Test", "Ho Test", "Liu Test", "leaf Test"

Basic Mysql operations SQL Structured Query Language (Structured Query statement) Contains fields and records.A database composed of multiple data tables Build Steps for a E-R diagram:1. Create a table for each object;2. Select a primary key for

How to use the report tool FineReport to dynamically display report columns and report finereport I believe that the implementation of dynamic columns has plagued a lot of people. The large amount of data, loading of multiple fields will be very

Mysql 5.7.14 installation and configuration graphic tutorial, mysql5.7.14 You need to install Mysql on your local machine. First, record the installation process as follows. 1. Download Software 1. Enter the mysql official website, log on to your

Centos6.5 compile and install mysql 5.7.14 detailed tutorial, centos6.55.7.14 The example in this article shares with you how to install and configure mysql 5.7.14 compiled by CENTOS6.5 for your reference. The specific content is as follows: Compile

MySql 5.6.14 winx64 configuration method (without installation), 5.6.14winx64 1. Download MySQL Community Server 5.6.14 2. decompress the MySQL package Decompress the downloaded MySQL package to the custom directory. 3. Add Environment