QUERY PLAN
GroupAggregate (cost=1099.46..1100.60 rows=50 width=44)
Group Key: c.project_id
-> Sort (cost=1099.46..1099.59 rows=51 width=20)
Sort Key: c.project_id
-> Hash Right Join (cost=912.42..1098.02 rows=51 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=51 width=8)
-> Seq Scan on tbl_cases c (cost=0.00..501.27 rows=51 width=8)
Filter: ((case_type = 2) AND (project_id = ANY ('{4102,4095,4093,4085,4090,4089,4049,4041,4027,4020,4001,3997,3996,3994,3988,3983,3954,3915,3880,3878}'::integer[])))