QUERY PLAN
GroupAggregate (cost=389.70..432.98 rows=1 width=44)
Group Key: c.project_id
-> Hash Right Join (cost=389.70..432.96 rows=1 width=20)
Hash Cond: (tbl_pre_sales.case_id = c.id)
-> HashAggregate (cost=101.54..125.03 rows=1566 width=20)
Group Key: tbl_pre_sales.case_id
-> Seq Scan on tbl_pre_sales (cost=0.00..85.78 rows=1576 width=24)
Filter: (NOT is_draft)
-> Hash (cost=288.14..288.14 rows=1 width=8)
-> Seq Scan on tbl_cases c (cost=0.00..288.14 rows=1 width=8)
Filter: ((case_type = 1) AND (project_id = 3935))