QUERY PLAN
GroupAggregate (cost=401.82..446.28 rows=29 width=44)
Group Key: c.client_id
-> Hash Right Join (cost=401.82..445.69 rows=30 width=20)
Hash Cond: (tbl_pre_sales.case_id = c.id)
-> HashAggregate (cost=102.98..126.80 rows=1588 width=20)
Group Key: tbl_pre_sales.case_id
-> Seq Scan on tbl_pre_sales (cost=0.00..87.00 rows=1598 width=24)
Filter: (NOT is_draft)
-> Hash (cost=298.46..298.46 rows=30 width=8)
-> Seq Scan on tbl_cases c (cost=0.00..298.46 rows=30 width=8)
Filter: ((case_type = 1) AND (client_id = 982))