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
17644	Use namedtuples in Query.alias_map to make debugging easier	Łukasz Rekucki	Adrian Holovaty	"Debugging the SQL compiler is not an easy task, and having to keep track of values in 8-tuples doesn't make it easier ;) There are probably more places that this could be applied to, not just {{{alias_map}}}, but it's a start. {{{namedtuple}}} has no extra memory or performance overhead (I didn't notice any change in the runtime of testsuite). 

On Python 2.5, we just use a plain tuple (lookup code hasn't been changed so it just works)."	Cleanup/optimization	closed	Database layer (models, ORM)	1.3	Normal	fixed		anssi.kaariainen@…	Accepted	1	0	0	0	0	0