QUERY PLAN
GroupAggregate (cost=1058.70..1059.65 rows=42 width=44)
Group Key: c.project_id
-> Sort (cost=1058.70..1058.81 rows=43 width=20)
Sort Key: c.project_id
-> Hash Right Join (cost=878.76..1057.53 rows=43 width=20)
Hash Cond: (tbl_implement_records.case_id = c.id)
-> HashAggregate (cost=394.56..491.62 rows=6471 width=20)
Group Key: tbl_implement_records.case_id
-> Seq Scan on tbl_implement_records (cost=0.00..326.79 rows=6777 width=24)
Filter: (NOT is_draft)
-> Hash (cost=483.66..483.66 rows=43 width=8)
-> Seq Scan on tbl_cases c (cost=0.00..483.66 rows=43 width=8)
Filter: ((case_type = 2) AND (project_id = ANY ('{4048,4047,4014,3950,3927,3949,3751,3899,3890,3886,3872,3857,3855,3816,3813,3786,3767,3764,3760,3752}'::integer[])))