What happens to Spool Space after a query is completed?

When a query is completed in Teradata, the Spool Space that was used during the execution of the query is released. Spool Space is a temporary storage area used to hold intermediate results generated during query processing. Once these intermediate results are no longer needed following the successful completion of a query, the system automatically releases the space, making it available for other queries or operations that may need it in the future. This efficient management ensures that the system can handle multiple queries simultaneously without unnecessary consumption of resources.

The other options suggest outcomes that do not apply to Spool Space after query completion. Permanent space is allocated for long-term data storage, while reserving space or expanding it for future use does not align with the temporary nature of Spool Space. Thus, upon completion of a query, the appropriate action taken is the release of Spool Space.