QUERY PLAN
GroupAggregate (cost=961.38..962.40 rows=45 width=44)
Group Key: c.project_id
-> Sort (cost=961.38..961.50 rows=46 width=20)
Sort Key: c.project_id
-> Hash Right Join (cost=797.94..960.11 rows=46 width=20)
Hash Cond: (tbl_implement_records.case_id = c.id)
-> HashAggregate (cost=354.54..442.59 rows=5870 width=20)
Group Key: tbl_implement_records.case_id
-> Seq Scan on tbl_implement_records (cost=0.00..292.78 rows=6176 width=24)
Filter: (NOT is_draft)
-> Hash (cost=442.82..442.82 rows=46 width=8)
-> Seq Scan on tbl_cases c (cost=0.00..442.82 rows=46 width=8)
Filter: ((case_type = 2) AND (project_id = ANY ('{3758,3689,3594,3580,3452,3796,3801,3665,3784,3781,3727,3725,3703,3256,2777,3488,3800,3793,3794,3792}'::integer[])))