How can I delete table data in Impala?

There are two ways to delete data from an Impala table:

1. Delete the data in the table using the DELETE statement.
2. Remove data from the table with the specified condition.
3. This will delete data from the table that meets the conditions. If the WHERE condition is not specified, all data in the table will be deleted.
4. Truncate a table using the TRUNCATE TABLE statement.
5. Remove all data from the table named table_name.
6. This will immediately delete all data from the table without triggering the write of transaction logs, thus making it faster than a DELETE statement. However, please note that the TRUNCATE TABLE statement irreversibly deletes all data from the entire table, so use it carefully.

It is important to note that deleting data from a table does not delete the structure and metadata of the table, it only deletes the rows of data in the table. If you want to completely delete the table, you can use the DROP TABLE statement.

DROP TABLE table_name;

This will delete the structure of the table, metadata, and all related data. Please use with caution as the table and data cannot be recovered after deletion.