text: /*
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You 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.
  */
  
  --  add t_ds_resources_un
  delimiter d//
  CREATE OR REPLACE FUNCTION uc_dolphin_T_t_ds_resources_un() RETURNS void AS $$
  BEGIN
      IF NOT EXISTS (SELECT 1 FROM information_schema.KEY_COLUMN_USAGE
          WHERE  TABLE_NAME = 't_ds_resources'
          AND CONSTRAINT_NAME = 't_ds_resources_un')
      THEN
          ALTER TABLE t_ds_resources ADD CONSTRAINT t_ds_resources_un UNIQUE (full_name,"type");
      END IF;
  END;
  $$ LANGUAGE plpgsql;
  d//
  
  delimiter ;
  SELECT uc_dolphin_T_t_ds_resources_un();
  DROP FUNCTION IF EXISTS uc_dolphin_T_t_ds_resources_un();
  