QUERY PLAN
GroupAggregate (cost=1000.90..1004.85 rows=169 width=44)
Group Key: c.project_id
-> Sort (cost=1000.90..1001.36 rows=184 width=20)
Sort Key: c.project_id
-> Hash Right Join (cost=808.36..993.98 rows=184 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=184 width=8)
-> Seq Scan on tbl_cases c (cost=0.00..395.52 rows=184 width=8)
Filter: ((case_type = 2) AND (project_id = ANY ('{2665,3954,3754,3150,3702,4137,3818,2783,3288,4095}'::integer[])))