QUERY PLAN
GroupAggregate (cost=544.31..544.47 rows=7 width=44)
Group Key: c.project_id
-> Sort (cost=544.31..544.33 rows=7 width=20)
Sort Key: c.project_id
-> Hash Right Join (cost=499.52..544.21 rows=7 width=20)
Hash Cond: (tbl_pre_sales.case_id = c.id)
-> HashAggregate (cost=104.58..128.85 rows=1618 width=20)
Group Key: tbl_pre_sales.case_id
-> Seq Scan on tbl_pre_sales (cost=0.00..88.30 rows=1628 width=24)
Filter: (NOT is_draft)
-> Hash (cost=394.85..394.85 rows=7 width=8)
-> Seq Scan on tbl_cases c (cost=0.00..394.85 rows=7 width=8)
Filter: ((case_type = 1) AND (project_id = ANY ('{3854,4133,4165,4109,4132,3695,3977,3559,3124,3132}'::integer[])))