id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
34779	Serializer makes unnecessary joins	Juan Alvarez	Juan Alvarez	"When handling M2M fields, the serializer would make unnecessary joins, as it has an empty `select_related`. Its default behavior is to select all related fields. This can even trigger a recursive addition of related fields, that end up in an `OperationalError` because of too many joins.

The regression seems to have been introduced in https://code.djangoproject.com/ticket/34620"	Bug	closed	Core (Serialization)	4.2	Release blocker	fixed		Martin Svoboda	Ready for checkin	1	0	0	0	0	0