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
29743	Queryset.extra is required to select Postgres' system columns like xmin and xmax	Navtez	nobody	"We use Queryset.extra to select Postgres' system columns like xmin and xmax as follows:

{{{
Model.objects.extra(select={'version': 'xmin'})
}}}

Please don't remove this as we don't find an alternative to use system columns.

Thanks!"	Cleanup/optimization	closed	Database layer (models, ORM)	2.1	Normal	invalid	orm, queryset, models		Unreviewed	0	0	0	0	0	0