QUERY PLAN
GroupAggregate (cost=793.11..794.76 rows=72 width=44)
Group Key: c.project_id
-> Sort (cost=793.11..793.30 rows=75 width=20)
Sort Key: c.project_id
-> Hash Right Join (cost=628.61..790.78 rows=75 width=20)
Hash Cond: (tbl_implement_records.case_id = c.id)
-> HashAggregate (cost=354.54..442.59 rows=5870 width=20)
Group Key: tbl_implement_records.case_id
-> Seq Scan on tbl_implement_records (cost=0.00..292.78 rows=6176 width=24)
Filter: (NOT is_draft)
-> Hash (cost=273.13..273.13 rows=75 width=8)
-> Seq Scan on tbl_cases c (cost=0.00..273.13 rows=75 width=8)
Filter: ((project_id = ANY ('{1018,1111}'::integer[])) AND (case_type = 2))