How to make a non-primary column unique in a returned result-set with Laravel's eloquent?

Question

In this example below I am requesting all colleges where the state is CO. But I'd like to say groupBy('name') or something in order to get a single college name record.

I get the following error when I attempt:

# Error:
SQLSTATE[42000]: Syntax error or access violation: 1055 Expression #1 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'imr.colleges.id' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by (SQL: select * from `colleges` where `state` = CO group by `name` limit 15 offset 135)

# Code:
College::where('state',$state)->groupBy('name')->paginate(15);

I don't particularly care which college (id) is returned, I just want to be able to return one of each college name per state.

Any assistance is appreciated.

Answer 1

尝试这个

College::selectRaw('GROUP_CONCAT(id), name, GROUP_CONCAT(state)')->where('state',$state)->groupBy('name')->paginate(15);