QUERY PLAN
GroupAggregate (cost=897.93..898.26 rows=15 width=44)
Group Key: c.project_id
-> Sort (cost=897.93..897.96 rows=15 width=20)
Sort Key: c.project_id
-> Hash Right Join (cost=723.81..897.63 rows=15 width=20)
Hash Cond: (tbl_implement_records.case_id = c.id)
-> HashAggregate (cost=381.98..476.36 rows=6292 width=20)
Group Key: tbl_implement_records.case_id
-> Seq Scan on tbl_implement_records (cost=0.00..316.00 rows=6598 width=24)
Filter: (NOT is_draft)
-> Hash (cost=341.64..341.64 rows=15 width=8)
-> Seq Scan on tbl_cases c (cost=0.00..341.64 rows=15 width=8)
Filter: ((case_type = 2) AND (project_id = ANY ('{3932,3933,3895,3837,3888,3796,3807}'::integer[])))