QUERY PLAN
Group (cost=41.27..41.31 rows=6 width=11)
Group Key: parent
-> Sort (cost=41.27..41.29 rows=7 width=11)
Sort Key: parent
-> Seq Scan on tbl_auth_item_child (cost=0.00..41.17 rows=7 width=11)
Filter: ((child)::text = 'distributeSource'::text)