The advanced function and skills of the ‘MyCli’ Library in Python

The advanced function and skills of the ‘MyCli’ Library in Python introduce: 'MyCli' is a Python class library for managing and operating mysql databases.It provides many advanced functions and skills to help developers use mysql databases faster and more efficiently. 1. Install MyCli First, I need to install MyCli.Open the terminal or command prompt, run the following command: pip install mycli 2. Connect to mysql database After installing MyCli, use the following command to connect to the MySQL database: MyCli -U [Username] -H [Hosting] -p [Password] For example, if the user name is 'root', the host address is 'localhost', and the password is 'password', you can run the following command to connect to the database: mycli -u root -h localhost -p password 3. Basic query operation After connecting to the database, you can use MyCli to perform various query operations.Here are some basic query examples: -Cose the database: Use [database name]; -D display all databases: SHOW DATABASES; -D database table: SHOW TABLES; -An data in the database table:: Select * from [Table name]; 4. Automatic completion and grammar highlight MyCli provides the function of automatic completion and high grammar, which can help developers write SQL queries more quickly.In the MyCli terminal, when entering some SQL statements, press the TAB key to automatically complete the command or name.In addition, MyCli also highlights the different parts of the SQL statement with different colors to enhance readability. 5. Export and import data MyCli allows exporting data into various formats, such as CSV, JSON, etc.The following is an example command of the export data: Select * from [Table Name] Into Outfile '[File Path] [Format]; For example, the data with the data named 'table1' is exported as a CSV file, and the following commands can be run: SELECT * FROM table1 INTO OUTFILE '/path/to/output.csv' FIELDS TERMINATED BY ',' ENCLOSED BY '"' LINES TERMINATED BY ' '; Correspondingly, you can use the following command to import the exported data into the database: Load data infile '[file path]' into table [table name] [format]; 6. Custom output format Using MyCli, you can customize the output format of the query result.Here are some example commands: -Ad the output query results using the format format: Select * from [Table Name] \ G; -On the query results in the form of vertical line separation: Select * from [Table name] \ g | set 's/\ t/|/g'; -On query results in JSON format: Select * from [Table name] \ g \ json; 7. Historical records and automatic saving query logs MyCli will automatically save the query history. The last time ICLI can use the last query command when ICLI is opened.In addition, you can also use the automatic query log to save the function and save the query log into the file. The command of the automatic query log is as follows: \ T [File path] For example, to save the query log to the file 'query_log.txt', you can run the following command: \T /path/to/query_log.txt 8. Use shortcut keys MyCli supports many shortcut keys to improve the operating speed of developers.Here are some commonly used shortcuts: -Peop/lower arrow: Browse historical query command -Ctrl + D: Exit MyCli -Ctrl + M: Switch the multi -line mode -Ctrl + L: Clear screen Summarize: 'MyCli' is a very useful Python class library that provides many advanced functions and skills to help developers manage and operate mysql database more conveniently.The use of MyCli can save time and improve efficiency, so that the interaction with the MySQL database is smoother.The above introduces some of MyCli's main functions and operation skills, and I hope it will be helpful to your development work.