QUERY PLAN
GroupAggregate (cost=1029.59..1030.52 rows=41 width=44)
Group Key: c.project_id
-> Sort (cost=1029.59..1029.70 rows=42 width=20)
Sort Key: c.project_id
-> Hash Right Join (cost=854.63..1028.46 rows=42 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=472.12..472.12 rows=42 width=8)
-> Seq Scan on tbl_cases c (cost=0.00..472.12 rows=42 width=8)
Filter: ((case_type = 2) AND (project_id = ANY ('{3870,3901,3927,3857,3959,3950,3796,3854,3878,3880,3955,3957,3947,3874,3934,3945,3780,3833,3846,3758}'::integer[])))