How to view mysql data

With the continuous development of Internet technology, MySQL database has become a necessary data storage method for many enterprises and companies. When using a MySQL database, we usually need to view the data stored in the database. This article introduces how to view MySQL data.

1. How to log in to the MySQL database

To view MySQL data, you first need to log in to the MySQL database. There are usually two ways to log in to a MySQL database: using the MySQL command line tool or using a visual tool.

1. Use the MySQL command line tool to log in to the MySQL database

The MySQL command line tool is a text interface tool. Using it to log in to the MySQL database requires entering some code in the command line. The specific steps are as follows:

1. Open the command line tool (Windows users can press the Win R key combination, enter cmd and press Enter; Mac users can open the terminal).
2. Enter the following command and press Enter to log in to the MySQL database.

mysql -u root -p

Among them, the -u parameter is used to specify the user name, root is the administrator account (other accounts can also be used); the -p parameter is used to specify the password, and you need to press Enter after entering the password. key to confirm.

3. After successfully logging in, you can execute various SQL commands on the command line.

2. Use the visual tool to log in to the MySQL database

The visual tool is a graphical database management tool through which you can easily manage the database. Currently popular visualization tools include MySQL Workbench, Navicat, etc. Taking MySQL Workbench as an example, you need to follow the following steps to log in to the MySQL database:

1. Open MySQL Workbench and click the "New Connection" button.
2. Enter the database connection information in the pop-up window, including host name, port number, user name, password, etc. Click the "Test Connection" button to test the connection status.
3. After the connection is successful, you can use MySQL Workbench to perform various database operations.

2. How to view MySQL data

After successfully logging into the MySQL database, you can view the data stored in the MySQL database. In MySQL, data is stored in the form of tables, and data can be viewed and manipulated through SQL commands or visualization tools.

1. Use SQL commands to view MySQL data

The most basic way to use SQL commands to view MySQL data is to use the SELECT statement. The specific steps are as follows:

1. Open the command Run tools or visualization tools to log in to the MySQL database.
2. Use the SELECT statement to query data, such as querying all data in the table:

SELECT * FROM 表名;

Among them, * represents all columns and can be replaced with specific column names.

3. The program will output data that meets the query conditions, corresponding to each row of data in the table.

2. Use visualization tools to view MySQL data

It is more convenient and intuitive to use visualization tools to view MySQL data. Taking MySQL Workbench as an example, the steps are as follows:

1. Open MySQL Workbench and enter the database structure interface.
2. Select the table where you want to view data, right-click and select "Table Data Viewer".
3. The program will switch to the table data viewer interface to display all data in the table.
4. You can use search, sorting, filtering and other functions to view and operate data.

Summary:

Viewing MySQL data is one of the most commonly used operations in daily MySQL database management. Through the introduction of this article, you should master logging in through command line tools or visual tools. MySQL database and ways to view data. Of course, viewing data is only the first step in database management. You also need to add, delete, and modify data. These contents can be used as the next step of learning.

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