QUERY PLAN
GroupAggregate (cost=548.79..550.58 rows=76 width=44)
Group Key: c.client_id
-> Sort (cost=548.79..549.00 rows=84 width=20)
Sort Key: c.client_id
-> Hash Right Join (cost=501.30..546.10 rows=84 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=395.52..395.52 rows=84 width=8)
-> Seq Scan on tbl_cases c (cost=0.00..395.52 rows=84 width=8)
Filter: ((case_type = 1) AND (client_id = ANY ('{3354,399,2616,2538,146,1661,982,2166,1301,3330}'::integer[])))