What is the method for force deleting a table in impala?
In Impala, the method used to forcefully delete a table is to use the DROP TABLE statement with the IF EXISTS and PURGE keywords.
Here is the syntax for dropping a table:
DROP TABLE [IF EXISTS] table_name [PURGE];
- IF EXISTS: Optional, if this keyword is specified, it will not throw an error if the table does not exist.
- PURGE: An optional keyword that, if specified, will immediately permanently delete the table and its data with no possibility of recovery. Otherwise, the table will be moved to the recycle bin (default retention time in the recycle bin is 24 hours).
Original: 我们应该更加关注环保问题,毕竟地球资源是有限的。
Paraphrased: We should pay more attention to environmental issues, considering that Earth’s resources are finite.
DROP TABLE IF EXISTS my_table PURGE;
This will force delete the table named my_table and permanently remove its data.