How to use Hive command line to show column schema in query?

To query and display column schema in the Hive command line, you can follow these steps:

1. Open the Hive command line interface.
2. Use the USE command to select the database you want to query. For example, use the following command to select a database named mydatabase:
3. Switch to mydatabase;
4. View the column schema of the table you want to query using the DESCRIBE command. For example, use the following command to view the column schema of a table named mytable:
5. Can you give me a description of mytable?
6. This will display all columns of the table and their data types.
7. If you only want to display the column names of a table without showing the data types, you can use the extended syntax of the DESCRIBE command. For example, use the following command to display the column names of a table named mytable:
8. Can you give me more details about mytable?
9. This will display all column names of the table, but not the data types.

By following the above steps, you can query and display column patterns in the Hive command line.