QUERY PLAN
GroupAggregate (cost=1058.70..1059.65 rows=42 width=44)
Group Key: c.project_id
-> Sort (cost=1058.70..1058.81 rows=43 width=20)
Sort Key: c.project_id
-> Hash Right Join (cost=878.76..1057.53 rows=43 width=20)
Hash Cond: (tbl_implement_records.case_id = c.id)
-> HashAggregate (cost=394.56..491.62 rows=6471 width=20)
Group Key: tbl_implement_records.case_id
-> Seq Scan on tbl_implement_records (cost=0.00..326.79 rows=6777 width=24)
Filter: (NOT is_draft)
-> Hash (cost=483.66..483.66 rows=43 width=8)
-> Seq Scan on tbl_cases c (cost=0.00..483.66 rows=43 width=8)
Filter: ((case_type = 2) AND (project_id = ANY ('{3744,3723,3714,3679,3653,3686,3661,3660,3652,3644,3633,3599,3591,3590,3589,3577,3576,3568,3552,3544}'::integer[])))