我有一个巨大但不复杂的 sql 查询，必须转换为 django orm 查询

Question

我必须转换以下 sql 查询，但我不知道如何将其转换为 django orm 中的相等查询，如果您可以的话，我将非常高兴:)))

select dialog_messages.*, 
    sender.first_name as sender_first_name,
     sender.last_name as sender_last_name,
     sender.cell_number as sender_cell_number,
     sender.avatar_full_path as sender_avatar_full_path, receiver.first_name as receiver_first_name,
     receiver.first_name as receiver_first_name,
     receiver.last_name as receiver_last_name,
     receiver.cell_number as receiver_cell_number, receiver.avatar_full_path as receiver_avatar_full_path from dialog_messages`` inner join user sender on ``sender``.``user_id`` = dialog_messages``.``sender_id`` inner join user receiver on receiver``.``user_id`` = ``dialog_messages``.``receiver_id`` where `dialog_id`` = ? order by ``dialog_messages``.``id`` desc

Answer 1

您应该使用 select_related（并查看 prefetch_related）。您可以在以下位置查看参考资料：

在您的代码中，在不了解您的模型的情况下，我认为您可以从以下内容开始：

DialogMessage.objects.select_related('sender', 'receiver')

我有一个巨大但不复杂的 sql 查询，必须转换为 django orm 查询

I have a huge but not complex sql query that must convert to django orm query

sql

django

orm