[migration] More resilient migration script
Query the information schema to retrieve existing constraint (primary key and
unique) and drop them.
Thus don't use anymore DROP CONSTRAINT IF EXISTS (not implemented by e.g. old
versions of sqlserver). To do so a missing DISTINCT was necessary to avoid
duplicates.
This package was debianized by Logilab <contact@logilab.fr>.
It was downloaded from http://download.logilab.org/pub/cubicweb
Upstream Author:
Logilab <contact@logilab.fr>
Copyright:
Copyright (c) 2003-2014 LOGILAB S.A. (Paris, FRANCE).
http://www.logilab.fr/ -- mailto:contact@logilab.fr
License:
This program is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by the
Free Software Foundation; either version 2.1 of the License, or (at your
option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
for more details.
You should have received a copy of the GNU Lessser General Public License
along with this program; if not, write to the Free Software Foundation,
Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
On Debian systems, the complete text of the GNU Lesser General Public License
may be found in '/usr/share/common-licenses/LGPL-2.1'.
Entypo pictograms:
Author:
Daniel Bruce <info@entypo.com> (www.entypo.com)
Licence:
Entypo pictograms are licensed under CC BY-SA 3.0 and the font
under SIL Open Font License.
The rights to each pictogram in the social extension are either
trademarked or copyrighted by the respective company.