Question

I want to retrieve a data where id=1 and flag=’D’ in Django. I would use WHERE with AND in SQL. How can I do it in Django? I tried:

File.objects.filter(user_id=1 AND flag='D')

But it doesn’t work.

And another thing, I can I update only one filed of the the database in Django i.e updating flag='D' to flag='F' with everything same.

Answer 1

File.objects.filter(user_id=1, flag='D')

This should get you all File that has user_id=1 and flag=’D’

For Updating a column you should use update on queryset

File.objects.filter(user_id=5).update(flag="D")

You can also do

q = File.objects.filter(user_id=1, flag='D')

print q.query to see the sql generated by Django ORM