QUERY PLAN
GroupAggregate (cost=1017.75..1018.82 rows=47 width=44)
Group Key: c.project_id
-> Sort (cost=1017.75..1017.87 rows=48 width=20)
Sort Key: c.project_id
-> Hash Right Join (cost=844.82..1016.41 rows=48 width=20)
Hash Cond: (tbl_implement_records.case_id = c.id)
-> HashAggregate (cost=377.36..470.53 rows=6211 width=20)
Group Key: tbl_implement_records.case_id
-> Seq Scan on tbl_implement_records (cost=0.00..312.19 rows=6517 width=24)
Filter: (NOT is_draft)
-> Hash (cost=466.86..466.86 rows=48 width=8)
-> Seq Scan on tbl_cases c (cost=0.00..466.86 rows=48 width=8)
Filter: ((case_type = 2) AND (project_id = ANY ('{3256,3935,3599,3477,3483,3458,3433,3423,3402,3381,3250,3379,3315,3357,3320,3165,3300,3239,3276,3252}'::integer[])))