QUERY PLAN
GroupAggregate (cost=869.15..871.00 rows=78 width=44)
Group Key: c.client_id
-> Sort (cost=869.15..869.37 rows=87 width=20)
Sort Key: c.client_id
-> Hash Right Join (cost=704.18..866.35 rows=87 width=20)
Hash Cond: (tbl_implement_records.case_id = c.id)
-> HashAggregate (cost=354.54..442.59 rows=5870 width=20)
Group Key: tbl_implement_records.case_id
-> Seq Scan on tbl_implement_records (cost=0.00..292.78 rows=6176 width=24)
Filter: (NOT is_draft)
-> Hash (cost=348.55..348.55 rows=87 width=8)
-> Seq Scan on tbl_cases c (cost=0.00..348.55 rows=87 width=8)
Filter: ((case_type = 2) AND (client_id = ANY ('{3328,543,3134,94,571,2173,4,520,2158,3330}'::integer[])))