我有一个关于 Postgres 的查询，我还添加了适当的索引。这里有什么遗漏吗？
SELECT orders.*, demo.name as d_name
FROM orders
LEFT JOIN users as demo ON demo.id = orders.dr_id
WHERE orders.customer_id = 526373
AND (orders.log_id = 300)
AND (orders.order_count_id IN (10, 1, 8, 2, 3))
LIMIT 5
查询计划来自EXPLAIN ANALYZE：
QUERY PLAN
------------------------------------------------------------------------------------------------------------------------------------------------------------
Limit (cost=2490.30..2867.15 rows=3 width=182) (actual time=33.292..34.115 rows=3 loops=1)
-> Nested Loop Left Join (cost=2490.30..2867.15 rows=3 width=182) (actual time=33.291..34.113 rows=3 loops=1)
-> Bitmap Heap Scan on orders (cost=2490.02..2842.22 rows=3 width=172) (actual time=33.279..34.097 rows=3 loops=1)
Recheck Cond: ((customer_id …