What are the basic operation commands in PostgreSQL?

PostgreSQL is an open-source relational database management system that has a wide range of features and flexible operations. Here are some commonly used basic operation commands:

1. Connect to database:
2. Connect using the PostgreSQL client to the specified database with the provided username.
3. Create a database.
4. CREATE DATABASE database_name;
5. Delete the database.
6. Delete the database with the name database_name.
7. List all databases.
8. I only need one choice.
9. Switch to a specific database.
10. Switch to database_name.
11. Create a table:
12. Make a table called table_name with columns column1 and column2 of datatypes datatype1 and datatype2 respectively.
13. delete table
14. Delete the table named table_name.
15. Insert data.
16. Add the specified values into the designated columns in the table.
17. Data inquiry:
18. Retrieve column1 and column2 from table_name based on the condition.
19. Update data:
20. Update the specified table by setting the values of certain columns based on a given condition.
21. Delete data.
22. Remove rows from the table where a specific condition is met.
23. Create an index.
24. Create an index named index_name on the table table_name with the specified columns column1, column2, and so on.
25. Remove index.
26. Delete the index named index_name.

These are some common basic operation commands, there are many other commands that can be used for managing and operating databases. You can learn more PostgreSQL commands through official documentation or other resources.