QUERY PLAN
GroupAggregate (cost=522.93..523.02 rows=4 width=44)
Group Key: c.project_id
-> Sort (cost=522.93..522.94 rows=4 width=20)
Sort Key: c.project_id
-> Hash Right Join (cost=478.19..522.89 rows=4 width=20)
Hash Cond: (tbl_pre_sales.case_id = c.id)
-> HashAggregate (cost=104.58..128.85 rows=1618 width=20)
Group Key: tbl_pre_sales.case_id
-> Seq Scan on tbl_pre_sales (cost=0.00..88.30 rows=1628 width=24)
Filter: (NOT is_draft)
-> Hash (cost=373.56..373.56 rows=4 width=8)
-> Seq Scan on tbl_cases c (cost=0.00..373.56 rows=4 width=8)
Filter: ((case_type = 1) AND (project_id = ANY ('{4097,4114,4124,4127,4120,4111,4052,3797}'::integer[])))