generate_series UDTF only supports integers

[Abdullahsab3]

Is your feature request related to a problem or challenge?

The newly implemented generate_series UDTF seems to only supports integers. Timestamps don't seem supported:

> select * from generate_series(now() - interval '1 year', now(), interval '1 month');
Error during planning: First argument must be an integer literal
> select * from unnest(generate_series(now() - interval '1 year', now(), interval '1 month'));
+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| UNNEST(generate_series(now() - IntervalMonthDayNano("IntervalMonthDayNano { months: 12, days: 0, nanoseconds: 0 }"),now(),IntervalMonthDayNano("IntervalMonthDayNano { months: 1, days: 0, nanoseconds: 0 }"))) |
+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| 2024-01-20T12:53:39.484276Z                                                                                                                                                                                     |
| 2024-02-20T12:53:39.484276Z                                                                                                                                                                                     |
| 2024-03-20T12:53:39.484276Z                                                                                                                                                                                     |
| 2024-04-20T12:53:39.484276Z                                                                                                                                                                                     |
| 2024-05-20T12:53:39.484276Z                                                                                                                                                                                     |
| 2024-06-20T12:53:39.484276Z                                                                                                                                                                                     |
| 2024-07-20T12:53:39.484276Z                                                                                                                                                                                     |
| 2024-08-20T12:53:39.484276Z                                                                                                                                                                                     |
| 2024-09-20T12:53:39.484276Z                                                                                                                                                                                     |
| 2024-10-20T12:53:39.484276Z                                                                                                                                                                                     |
| 2024-11-20T12:53:39.484276Z                                                                                                                                                                                     |
| 2024-12-20T12:53:39.484276Z                                                                                                                                                                                     |
| 2025-01-20T12:53:39.484276Z                                                                                                                                                                                     |
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Elapsed 0.035 seconds.

It would be nice to have similarly supported types as to the array generate_series variant

Describe the solution you'd like

No response

Describe alternatives you've considered

epoch as input, but not the greatest idea since month steps for examples can differ depending on the month

Additional context

Related PRs:

• Support 1 or 3 arg in generate_series() UDTF #13856
• Add generate_series() udtf (and introduce 'lazy' MemoryExec) #13540