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
13434	MySQL Index creation with long name fails	hgeerts@…	nobody	"With the introduction of the through model for !ManyToManyFields in [11710] django creates an index for all !ForeignKeys on the through model.
Because of the naming scheme used by the through model you can easily exceed the 64 character limit for the index name on MySQL.

django-1.1 did not have this problem because it created an index with 'ALTER TABLE %s ADD CONSTRAINT %s FOREIGN KEY (%s) REFERENCES %s (%s)%s;' for which the name is already truncated.

Syncdb only generates an error but does not stop so this is only a minor inconvenience.
The attached patch truncates the index name if applicable and sets the max_name_length for mysql to 64."		closed	Database layer (models, ORM)	1.2-beta		duplicate			Unreviewed	1	0	0	0	0	0