db.migration.V17__make_directory_paths_unique.sql Maven / Gradle / Ivy
/*
* Modifications copyright (C) 2019 Vitasystems GmbH, Hannover Medical School.
* This file is part of Project EHRbase
* Copyright (c) 2015 Christian Chevalley
* This file is part of Project Ethercis
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
-- Table ehr.folder_hierarchy
-- Add constraint for unique parent-child pairs
ALTER TABLE ehr.folder_hierarchy
ADD CONSTRAINT UQ_FolderHierarchy_Parent_Child
UNIQUE(parent_folder, child_folder);