QUERY PLAN
GroupAggregate (cost=1099.42..1100.53 rows=49 width=44)
Group Key: c.project_id
-> Sort (cost=1099.42..1099.54 rows=50 width=20)
Sort Key: c.project_id
-> Hash Right Join (cost=912.41..1098.01 rows=50 width=20)
Hash Cond: (tbl_implement_records.case_id = c.id)
-> HashAggregate (cost=410.51..511.28 rows=6718 width=20)
Group Key: tbl_implement_records.case_id
-> Seq Scan on tbl_implement_records (cost=0.00..340.28 rows=7023 width=24)
Filter: (NOT is_draft)
-> Hash (cost=501.27..501.27 rows=50 width=8)
-> Seq Scan on tbl_cases c (cost=0.00..501.27 rows=50 width=8)
Filter: ((case_type = 2) AND (project_id = ANY ('{2,3,4,5,6,7,8,10,11,12,13,14,15,16,18,19,20,21,22,23}'::integer[])))