QUERY PLAN
GroupAggregate (cost=577.27..577.42 rows=7 width=44)
Group Key: c.project_id
-> Sort (cost=577.27..577.28 rows=7 width=20)
Sort Key: c.project_id
-> Hash Right Join (cost=532.36..577.17 rows=7 width=20)
Hash Cond: (tbl_pre_sales.case_id = c.id)
-> HashAggregate (cost=104.72..129.05 rows=1622 width=20)
Group Key: tbl_pre_sales.case_id
-> Seq Scan on tbl_pre_sales (cost=0.00..88.37 rows=1635 width=24)
Filter: (NOT is_draft)
-> Hash (cost=427.55..427.55 rows=7 width=8)
-> Seq Scan on tbl_cases c (cost=0.00..427.55 rows=7 width=8)
Filter: ((case_type = 1) AND (project_id = ANY ('{4184,4182,4185,4183,4181,4173,4171,4152,4150,4158,2939,4179,4175}'::integer[])))