I have a table that contains duplicates in scorecard_id
['scorecard_id', 'attribute_id', 'rating', 'notes', 'created_at',
'updated_at', 'name', 'category', 'category_name']
for example, there are two rows in which scorecard_id is the same. now I only want the rows in which updated_at is the most recent (updated_at contains date)
