如何將此查詢轉換為Peewee ORM？

Question

我正在使用（優秀） Peewee ORM來滿足我在Python中的查詢需求，現在我想轉換以下查詢：

select t1.created, t1.property_id, t1.requesting_user_id, t1.type, t1.response 
from pdr t1
inner join (
    select max(id) as id, property_id, requesting_user_id
    from pdr
    where property_id = 7
    group by requesting_user_id
) as t2 on t2.id = t1.id

因此，我提出了以下建議：

PDR.select()\
    .join(PDR)\
    .where(PDR.property == 7)\
    .group_by(PDR.requesting_user)

但這會創建以下sql：

SELECT t1.id, t1.created, t1.property_id, t1.requesting_user_id, t1.type, t1.comment, t1.responding_user_id, t1.property_details_request_id, t1.response
FROM pdr AS t1 
INNER JOIN pdr AS t1 
ON (t1.property_details_request_id = t1.id) 
WHERE (t1.property_id = 7) 
GROUP BY t1.requesting_user_id

我嘗試了其他幾種變體，但是有點卡住了。

有人知道如何將查詢轉換為Peewee嗎？ 歡迎所有提示！

Answer 1

嘗試以下操作（未經測試，但希望會有所幫助）：

PDRAlias = PDR.alias()
subq = (PDRAlias
        .select(fn.MAX(PDRAlias.id).alias('max_id'), PDRAlias.property, PDRAlias.requesting_user)
        .where(PDRAlias.property == 7)
        .group_by(PDRAlias.requesting_user)
        .alias('subq'))
query = (PDR
         .select()
         .join(subq, on=(subq.c.max_id == PDR.id)))