This article mainly introduces the first MySQL basic tutorial in detail, the mysql5.7.18 installation and connection tutorial, which has certain reference value. Interested friends can refer to it. I hope it can help everyone.
Starting from this article, use a new series of articles to introduce and learn MySQL. Why should you learn MySQL? From a product perspective, most software database services still use relational databases. The main database products include Oracle, Microsoft's MSSQL, IBM's DB2, and the MySQL we are going to introduce. MySQL is the first choice for databases in many small and medium-sized website servers. It has a free version and a commercial version. It is currently an Oracle product. From the perspective of testers, more and more software products are related to data, such as e-commerce and some software products for database service query in a certain field. In addition to basic software functional testing, the company also hopes that testers can understand more business knowledge. Usually, these business data have to deal with databases most of the time. Therefore, testers must master some basic operations of the database and be able to write SQL query statements. Being able to write SQL query statements is mentioned in many job descriptions.
There are many articles and examples on the Internet for simple addition, deletion, modification and query of SQL statements. What I want to do here is install MySQL and use it simply, and then practice writing SQL queries, so that I can master SQL statements more systematically. Many times, you have SQL practice statements on the Internet, but you do not have a SQL Server environment, so it is difficult for you to understand and quickly master SQL statements. Therefore, our first article starts with installing the MySQL server and client, creating the database and connecting to the database.
1. Download and installation of MySQL Server
1. Open the URL: https://dev.mysql.com/downloads/mysql /, here we download the community free version
2. Pull down the page, find the Donwload button, and select the 32 or 64-bit version according to your machine operating system version. The latest version is 5.7.18
3. After downloading, it will be installed by default. We will choose to install MySQL Server and leave other components unchecked.
4. During the installation process, create a password for root. I set the password here to root, as shown below.
You need to click Add User to add a DAB account: test/123456, enter the user name and password, as shown below
Click Next to end the installation by default. After installing MySQL Server, database-related services will start every time you start your computer. Now that we have installed the database server, next, we need to install a visual, graphical interface client to connect to the database. Here we use MySQL Workbench.
2. Download and installation of MySQL Workbench
1. Open the URL https://dev.mysql.com/downloads/workbench/
2. Find "Windows (x86, 64-bit), MSI Installer"
3. Click the Download button
4 .On the new page, drop down, we don’t need to log in to the account, click No thanks, just start my download.
5. Start downloading.
6. After the download is completed, start the installation. The interface is as follows:
##3. Connect to the database on MySQL Workbench
1. Create our own database db1
In the picture above, db1 is our newly created database, and sys is the default database after MySQL Server is installed. From now on, we will use MySQL Workbench to connect to our database, and then create tables and other related data manually or with SQL statements. The overall interface is as follows.
#The basic SQL environment is introduced here. The next article will talk about how to create tables and columns in the table under the db1 database.
Related recommendations:
MySql5.7.18 Character set configuration graphic example sharing
centos7.3 installation mysql5.7.18 example detailed explanation
The above is the detailed content of MySQL basic tutorial mysql5.7.18 installation and connection. For more information, please follow other related articles on the PHP Chinese website!

The steps for upgrading MySQL database include: 1. Backup the database, 2. Stop the current MySQL service, 3. Install the new version of MySQL, 4. Start the new version of MySQL service, 5. Recover the database. Compatibility issues are required during the upgrade process, and advanced tools such as PerconaToolkit can be used for testing and optimization.

MySQL backup policies include logical backup, physical backup, incremental backup, replication-based backup, and cloud backup. 1. Logical backup uses mysqldump to export database structure and data, which is suitable for small databases and version migrations. 2. Physical backups are fast and comprehensive by copying data files, but require database consistency. 3. Incremental backup uses binary logging to record changes, which is suitable for large databases. 4. Replication-based backup reduces the impact on the production system by backing up from the server. 5. Cloud backups such as AmazonRDS provide automation solutions, but costs and control need to be considered. When selecting a policy, database size, downtime tolerance, recovery time, and recovery point goals should be considered.

MySQLclusteringenhancesdatabaserobustnessandscalabilitybydistributingdataacrossmultiplenodes.ItusestheNDBenginefordatareplicationandfaulttolerance,ensuringhighavailability.Setupinvolvesconfiguringmanagement,data,andSQLnodes,withcarefulmonitoringandpe

Optimizing database schema design in MySQL can improve performance through the following steps: 1. Index optimization: Create indexes on common query columns, balancing the overhead of query and inserting updates. 2. Table structure optimization: Reduce data redundancy through normalization or anti-normalization and improve access efficiency. 3. Data type selection: Use appropriate data types, such as INT instead of VARCHAR, to reduce storage space. 4. Partitioning and sub-table: For large data volumes, use partitioning and sub-table to disperse data to improve query and maintenance efficiency.

TooptimizeMySQLperformance,followthesesteps:1)Implementproperindexingtospeedupqueries,2)UseEXPLAINtoanalyzeandoptimizequeryperformance,3)Adjustserverconfigurationsettingslikeinnodb_buffer_pool_sizeandmax_connections,4)Usepartitioningforlargetablestoi

MySQL functions can be used for data processing and calculation. 1. Basic usage includes string processing, date calculation and mathematical operations. 2. Advanced usage involves combining multiple functions to implement complex operations. 3. Performance optimization requires avoiding the use of functions in the WHERE clause and using GROUPBY and temporary tables.

Efficient methods for batch inserting data in MySQL include: 1. Using INSERTINTO...VALUES syntax, 2. Using LOADDATAINFILE command, 3. Using transaction processing, 4. Adjust batch size, 5. Disable indexing, 6. Using INSERTIGNORE or INSERT...ONDUPLICATEKEYUPDATE, these methods can significantly improve database operation efficiency.

In MySQL, add fields using ALTERTABLEtable_nameADDCOLUMNnew_columnVARCHAR(255)AFTERexisting_column, delete fields using ALTERTABLEtable_nameDROPCOLUMNcolumn_to_drop. When adding fields, you need to specify a location to optimize query performance and data structure; before deleting fields, you need to confirm that the operation is irreversible; modifying table structure using online DDL, backup data, test environment, and low-load time periods is performance optimization and best practice.


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

VSCode Windows 64-bit Download
A free and powerful IDE editor launched by Microsoft

Dreamweaver CS6
Visual web development tools

Dreamweaver Mac version
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

WebStorm Mac version
Useful JavaScript development tools
