Query result as an indexed array or object by index of choice

There is already a findColumn method which uses array_column for single result. Maybe we can have an analogous findAllColumn() which will do the indexing for set of results.

Perhaps you can send in a PR in the Github repo?

findColumn() uses find() without any argument which means it finds and returns all matching rows. Not just a single row (result).
It uses array_column() without 3rd argument so it doesn't handle any array indexing.

I think it would be inconsistent to have:

1. findColumn() returning unindexed array (indexed from 0 to n)
   
2. findAllColumn() returning indexed array
   

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Perhaps you can send in a PR in the Github repo?

I did, let's see how it goes:
#3895 Model: support returning array indexed by a specified column