QUERY PLAN
GroupAggregate (cost=721.18..907.65 rows=42 width=44)
Group Key: c.project_id
-> Hash Right Join (cost=721.18..906.81 rows=43 width=20)
Hash Cond: (tbl_implement_records.case_id = c.id)
-> HashAggregate (cost=410.53..511.32 rows=6719 width=20)
Group Key: tbl_implement_records.case_id
-> Seq Scan on tbl_implement_records (cost=0.00..340.29 rows=7024 width=24)
Filter: (NOT is_draft)
-> Hash (cost=310.12..310.12 rows=43 width=8)
-> Seq Scan on tbl_cases c (cost=0.00..310.12 rows=43 width=8)
Filter: ((case_type = 2) AND (project_id = 1018))