Sylvain Thénault <sylvain.thenault@logilab.fr> [Mon, 20 Jun 2016 15:10:24 +0200] rev 11365
[migration] drop identity_relation if it exists
It has been generated erroneously for a while, then fixed but not properly deleted from old
databases.
Don't use IF EXISTS for sqlserver compat.
Sylvain Thénault <sylvain.thenault@logilab.fr> [Wed, 22 Jun 2016 14:35:43 +0200] rev 11364
[migration] Reserialize all constraints since yams introduce new JSON serializing format
So we may drop support for older format in yams at some point.
Sylvain Thénault <sylvain.thenault@logilab.fr> [Thu, 23 Jun 2016 15:45:30 +0200] rev 11363
[migration] Add IF EXISTS on DROP CONSTRAINT
problem encountered on migration of a legacy database
Sylvain Thénault <sylvain.thenault@logilab.fr> [Mon, 20 Jun 2016 18:00:00 +0200] rev 11362
[schema sync] Rename index when an entity type is renamed
So we may still find them later using their expected name, and avoid collisions.
Closes #13822045