QUERY PLAN
GroupAggregate (cost=489.97..490.73 rows=33 width=44)
Group Key: c.client_id
-> Sort (cost=489.97..490.06 rows=34 width=20)
Sort Key: c.client_id
-> Hash Right Join (cost=447.40..489.11 rows=34 width=20)
Hash Cond: (tbl_pre_sales.case_id = c.id)
-> HashAggregate (cost=98.42..121.07 rows=1510 width=20)
Group Key: tbl_pre_sales.case_id
-> Seq Scan on tbl_pre_sales (cost=0.00..83.22 rows=1520 width=24)
Filter: (NOT is_draft)
-> Hash (cost=348.55..348.55 rows=34 width=8)
-> Seq Scan on tbl_cases c (cost=0.00..348.55 rows=34 width=8)
Filter: ((case_type = 1) AND (client_id = ANY ('{101,54,2491,18,2187,2806,3316,3290,2737,21}'::integer[])))