QUERY PLAN
GroupAggregate (cost=992.44..992.94 rows=22 width=44)
Group Key: c.project_id
-> Sort (cost=992.44..992.50 rows=22 width=20)
Sort Key: c.project_id
-> Hash Right Join (cost=806.33..991.95 rows=22 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=395.52..395.52 rows=22 width=8)
-> Seq Scan on tbl_cases c (cost=0.00..395.52 rows=22 width=8)
Filter: ((case_type = 2) AND (project_id = ANY ('{61,183,95,166,291,290,140,330,31,79}'::integer[])))