QUERY PLAN
GroupAggregate (cost=544.73..545.13 rows=18 width=44)
Group Key: c.client_id
-> Sort (cost=544.73..544.77 rows=18 width=20)
Sort Key: c.client_id
-> Hash Right Join (cost=499.66..544.35 rows=18 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=394.85..394.85 rows=18 width=8)
-> Seq Scan on tbl_cases c (cost=0.00..394.85 rows=18 width=8)
Filter: ((case_type = 1) AND (client_id = ANY ('{3424,42,3455,3453,3442,3410,3441,3440,3439,3394}'::integer[])))