如何在 django orm 中编写此 sql 查询？

Question

I have a sql query that works like this, but I couldn't figure out how to write this query in django. Can you help me?

select datetime,
       array_to_json(array_agg(json_build_object(parameter, raw)))  as parameters
  from dbp_istasyondata
 group by 1
 order by 1;

Answer 1

You can use raw function of django orm. You can write your query like this:

YourModel.objects.raw('select * from your table'): #---> Change the model name and query

Answer 2

Here you have PostgreSQL system functions. Django ORM doesn't have all these functions. Django ORM can cover it partially.

Now you can do one of these.

1. Write ''raw sql'' and execute it.
2. You can write python @staticmethods to implement that functionality then use it in your view.py. (Here you'll have python-power)