Adding hint to sum aggregations

[Sam Mahdad]

Hello,

When calling .sum() the hint is not passed over to the aggregate function even though the aggregate function passes over the kwargs correctly. Would it be possible/ideal to pass over the hinting as to help the QueryPlanner and developers decide more precisely which index to use?

I didn't see any open/closed issues pertaining to this.

Sincerely,

Sam Mahdad