QUERY PLAN
GroupAggregate (cost=1017.47..1018.40 rows=41 width=44)
Group Key: c.project_id
-> Sort (cost=1017.47..1017.57 rows=42 width=20)
Sort Key: c.project_id
-> Hash Right Join (cost=844.75..1016.34 rows=42 width=20)
Hash Cond: (tbl_implement_records.case_id = c.id)
-> HashAggregate (cost=377.36..470.53 rows=6211 width=20)
Group Key: tbl_implement_records.case_id
-> Seq Scan on tbl_implement_records (cost=0.00..312.19 rows=6517 width=24)
Filter: (NOT is_draft)
-> Hash (cost=466.86..466.86 rows=42 width=8)
-> Seq Scan on tbl_cases c (cost=0.00..466.86 rows=42 width=8)
Filter: ((case_type = 2) AND (project_id = ANY ('{3935,3927,3751,3899,3890,3886,3872,3857,3855,3816,3786,3767,3764,3760,3752,3744,3723,3714,3679,3653}'::integer[])))