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
36814	During migration for rename m2m field, alter table rename query not generated	Dan Tyan		"Have one migration file 
with rule:

{{{
migrations.RenameField(
            model_name=""order"",
            old_name=""tags"",
            new_name=""old_tags"",
        ),
}}}

where tags is a ManyToMnay field

Django < 6 sqlmigrate generates next sql 

{{{
--
-- Rename field tags on order to old_tags
--
ALTER TABLE ""order_tags"" RENAME TO ""order_old_tags"";
--
-- Raw SQL operation
--
}}}

Django 6 generates 


{{{
--
-- Rename field tags on order to old_tags
--
-- (no-op)
--
-- Raw SQL operation
--

}}}

so django test fails with 
"	Bug	closed	Migrations	6.0	Normal	duplicate	migration, manytomany		Unreviewed	0	0	0	0	0	0