QUERY PLAN
GroupAggregate (cost=1032.08..1034.04 rows=83 width=44)
Group Key: c.client_id
-> Sort (cost=1032.08..1032.31 rows=92 width=20)
Sort Key: c.client_id
-> Hash Right Join (cost=855.25..1029.08 rows=92 width=20)
Hash Cond: (tbl_implement_records.case_id = c.id)
-> HashAggregate (cost=381.98..476.36 rows=6292 width=20)
Group Key: tbl_implement_records.case_id
-> Seq Scan on tbl_implement_records (cost=0.00..316.00 rows=6598 width=24)
Filter: (NOT is_draft)
-> Hash (cost=472.12..472.12 rows=92 width=8)
-> Seq Scan on tbl_cases c (cost=0.00..472.12 rows=92 width=8)
Filter: ((case_type = 2) AND (client_id = ANY ('{399,473,644,2126,2120,1946,2162,2169,1207,1355,1205,629,1250,1391,1358,1349,1310,2042,577,914}'::integer[])))