What `unsorted data` really implies

[nickitat]

Hi 👋🏼
I'd like to ask for some clarification. Does the unsorted mode implies that no particular sorting is required (so we're free to use none or any of our choice) or that it is required to have no ordering (or sort-based index etc)?
Thx.

[Tmonster]

From what I have gathered, sorted mode applied only to data generation, meaning you can generate sorted input data.

If the order of the output data is different, it should not affect result verification, since that is done by calculating aggregate values over the answer table.

[nickitat]

From what I have gathered, sorted mode applied only to data generation, meaning you can generate sorted input data.

If the order of the output data is different, it should not affect result verification, since that is done by calculating aggregate values over the answer table.

Let me clarify a bit what I really meant to ask: Is it OK to create tables with indexes (e.g., with ordering by join columns) in the unsorted mode? I thought it might not be really fair in case those indexes would improve performance.