--
-- This file is part of TALER
-- Copyright (C) 2026 Taler Systems SA
--
-- TALER is free software; you can redistribute it and/or modify it under the
-- terms of the GNU General Public License as published by the Free Software
-- Foundation; either version 3, or (at your option) any later version.
--
-- TALER 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 General Public License for more details.
--
-- You should have received a copy of the GNU General Public License along with
-- TALER; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>

-- @file merchant-0035.sql
-- @brief Force all merchant_ids to be lower-case.
-- @author Christian Grothoff

BEGIN;

-- Check patch versioning is in place.
SELECT _v.register_patch('merchant-0035', NULL, NULL);

SET search_path TO merchant;

-- Note: this could theoretically fail if there are
-- already merchant IDs that only differ by case.
-- In that case, a manual migration is required.
UPDATE merchant_instances
   SET merchant_id = LOWER(merchant_id);

COMMIT;
