QUERY PLAN
GroupAggregate (cost=1080.67..1082.45 rows=78 width=44)
Group Key: c.project_id
-> Sort (cost=1080.67..1080.87 rows=81 width=20)
Sort Key: c.project_id
-> Hash Right Join (cost=892.48..1078.10 rows=81 width=20)
Hash Cond: (tbl_implement_records.case_id = c.id)
-> HashAggregate (cost=410.53..511.32 rows=6719 width=20)
Group Key: tbl_implement_records.case_id
-> Seq Scan on tbl_implement_records (cost=0.00..340.29 rows=7024 width=24)
Filter: (NOT is_draft)
-> Hash (cost=480.93..480.93 rows=81 width=8)
-> Seq Scan on tbl_cases c (cost=0.00..480.93 rows=81 width=8)
Filter: ((case_type = 2) AND (project_id = ANY ('{4184,4182,4174,4173,4170,4167,4166,4144,4152,4150,3991,4014,3703,3679,3623,3265,2939,1018}'::integer[])))