Databricks Certified Data Engineer - Professional
Get started today
Ultimate access to all questions.
A data engineering team has created a Delta Lake table named customers_clone using the query CREATE TABLE customers_clone AS SELECT * FROM customers. If a data engineer attempts to drop this table with the command DROP TABLE customers_clone, what will be the outcome?
A data engineering team has created a Delta Lake table named customers_clone using the query CREATE TABLE customers_clone AS SELECT * FROM customers. If a data engineer attempts to drop this table with the command DROP TABLE customers_clone, what will be the outcome?
Explanation:
When you execute DROP TABLE in Delta Lake, it performs a complete deletion of both the table's metadata (schema, partitions, etc.) from the Delta Lake transaction log and the underlying data files from the storage location. This behavior ensures that all traces of the table are removed from the Delta Lake ecosystem. It's important to note that Delta Lake tables are independent entities, and dropping a table does not depend on whether it was created as a clone of another table. Always proceed with caution when dropping tables in production environments to avoid unintended data loss.