QUERY PLAN
GroupAggregate (cost=525.26..526.14 rows=38 width=44)
Group Key: c.client_id
-> Sort (cost=525.26..525.36 rows=40 width=20)
Sort Key: c.client_id
-> Hash Right Join (cost=479.39..524.20 rows=40 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=374.17..374.17 rows=40 width=8)
-> Seq Scan on tbl_cases c (cost=0.00..374.17 rows=40 width=8)
Filter: ((case_type = 1) AND (client_id = ANY ('{2616,2538,3417,2032,14,2198,28,481}'::integer[])))