The .select_related is not necessary in the .update documentation

[Willem Van Onsem]

This question on StackOverflow is questioning a part of the documentation ​https://stackoverflow.com/q/64795627/67579

It asks what the use is of the .select_related in:

>>> Entry.objects.select_related().filter(blog=b).update(headline='Everything is the same')

To the best of my knowledge, there is no use of .select_reated in case of a .update(..). Likely the ORM will ignore .select_related and .prefetch_related calls, and if it does not, it can cause problems since an UPDATE ... query with a JOIN ... clause results in problems about what table to update and how.

It thus might be better to omit the .select_related() part here. Likely this is due to copying from another part of the documentation.

[Carlton Gibson]

Yes, looks right.

[GitHub <noreply@…>]

In c448e61:

Fixed #32187 -- Removed unnecessary select_related in queries doc.

[Carlton Gibson <carlton.gibson@…>]

In eba8d6f:

[3.1.x] Fixed #32187 -- Removed unnecessary select_related in queries doc.

Backport of c448e614c60cc97c6194c62052363f4f501e0953 from master