QUERY PLAN
Aggregate (cost=40.90..40.91 rows=1 width=8)
-> Sort (cost=34.80..35.82 rows=407 width=611)
Sort Key: d.updated_at DESC
-> HashAggregate (cost=13.09..17.16 rows=407 width=611)
Group Key: d.id
-> Seq Scan on tbl_documents d (cost=0.00..12.07 rows=407 width=12)