QUERY PLAN
GroupAggregate (cost=27.66..30.89 rows=1 width=44)
Group Key: c.client_id
-> Hash Right Join (cost=27.66..30.87 rows=1 width=20)
Hash Cond: (tbl_implement_records.case_id = c.id)
-> HashAggregate (cost=13.75..15.49 rows=116 width=20)
Group Key: tbl_implement_records.case_id
-> Seq Scan on tbl_implement_records (cost=0.00..12.50 rows=125 width=24)
Filter: (NOT is_draft)
-> Hash (cost=13.90..13.90 rows=1 width=8)
-> Seq Scan on tbl_cases c (cost=0.00..13.90 rows=1 width=8)
Filter: ((case_type = 2) AND (client_id = 1))