QUERY PLAN
GroupAggregate (cost=548.02..549.87 rows=79 width=44)
Group Key: c.client_id
-> Sort (cost=548.02..548.23 rows=87 width=20)
Sort Key: c.client_id
-> Hash Right Join (cost=500.52..545.21 rows=87 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=87 width=8)
-> Seq Scan on tbl_cases c (cost=0.00..394.85 rows=87 width=8)
Filter: ((case_type = 1) AND (client_id = ANY ('{399,2616,2538,146,1661,982,2166,1301,3330,2182}'::integer[])))