QUERY PLAN
GroupAggregate (cost=991.72..992.22 rows=22 width=44)
Group Key: c.project_id
-> Sort (cost=991.72..991.78 rows=22 width=20)
Sort Key: c.project_id
-> Hash Right Join (cost=805.63..991.23 rows=22 width=20)
Hash Cond: (tbl_implement_records.case_id = c.id)
-> HashAggregate (cost=410.51..511.28 rows=6718 width=20)
Group Key: tbl_implement_records.case_id
-> Seq Scan on tbl_implement_records (cost=0.00..340.28 rows=7023 width=24)
Filter: (NOT is_draft)
-> Hash (cost=394.85..394.85 rows=22 width=8)
-> Seq Scan on tbl_cases c (cost=0.00..394.85 rows=22 width=8)
Filter: ((case_type = 2) AND (project_id = ANY ('{3854,3796,4024,3957,4146,4005,4149,4136,4133,4165}'::integer[])))