QUERY PLAN
GroupAggregate (cost=517.90..518.58 rows=30 width=44)
Group Key: c.client_id
-> Sort (cost=517.90..517.97 rows=31 width=20)
Sort Key: c.client_id
-> Hash Right Join (cost=473.76..517.13 rows=31 width=20)
Hash Cond: (tbl_pre_sales.case_id = c.id)
-> HashAggregate (cost=101.62..125.17 rows=1570 width=20)
Group Key: tbl_pre_sales.case_id
-> Seq Scan on tbl_pre_sales (cost=0.00..85.82 rows=1580 width=24)
Filter: (NOT is_draft)
-> Hash (cost=371.75..371.75 rows=31 width=8)
-> Seq Scan on tbl_cases c (cost=0.00..371.75 rows=31 width=8)
Filter: ((case_type = 1) AND (client_id = ANY ('{10,1331,2179,16,1438,2263,2255,77,154,318}'::integer[])))