QUERY PLAN
GroupAggregate (cost=1020.82..1024.49 rows=157 width=44)
Group Key: c.project_id
-> Sort (cost=1020.82..1021.25 rows=171 width=20)
Sort Key: c.project_id
-> Hash Right Join (cost=843.38..1014.48 rows=171 width=20)
Hash Cond: (tbl_implement_records.case_id = c.id)
-> HashAggregate (cost=376.02..468.91 rows=6193 width=20)
Group Key: tbl_implement_records.case_id
-> Seq Scan on tbl_implement_records (cost=0.00..311.03 rows=6499 width=24)
Filter: (NOT is_draft)
-> Hash (cost=465.22..465.22 rows=171 width=8)
-> Seq Scan on tbl_cases c (cost=0.00..465.22 rows=171 width=8)
Filter: ((case_type = 2) AND (project_id = ANY ('{3197,3927,3915,263,2914,3837,2939,3751,3934,3883,3930,3665,3150,3910,3922,3932,3911,3933,3895,3908}'::integer[])))