What does the `rename` command do in SPL?

The rename command in SPL (Search Processing Language) is used specifically to change the name of a field in the search results. When you apply the rename command, you effectively provide an alias to an existing field, making it easier for users to understand or work with the data by giving fields more meaningful names or clarifying their purpose. This is particularly useful when fields have non-descriptive default names or when you want to standardize field names across different datasets for consistency in reporting or analysis.

The other options, while relevant to data manipulation tasks that can be performed in SPL, do not accurately describe the function of the rename command. The command does not delete fields, add new fields, or format data. Instead, its sole purpose is focused on altering field names to enhance clarity and usability in the results.