QUERY PLAN
GroupAggregate (cost=393.08..436.47 rows=1 width=44)
Group Key: c.project_id
-> Hash Right Join (cost=393.08..436.45 rows=1 width=20)
Hash Cond: (tbl_pre_sales.case_id = c.id)
-> HashAggregate (cost=101.62..125.17 rows=1570 width=20)
Group Key: tbl_pre_sales.case_id
-> Seq Scan on tbl_pre_sales (cost=0.00..85.82 rows=1580 width=24)
Filter: (NOT is_draft)
-> Hash (cost=291.45..291.45 rows=1 width=8)
-> Seq Scan on tbl_cases c (cost=0.00..291.45 rows=1 width=8)
Filter: ((case_type = 1) AND (project_id = 3890))