text: /**************************************************************************
  * Copyright 2016 Observational Health Data Sciences and Informatics (OHDSI)
  *
  * 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.
  *
  * Authors: Timur Vakhitov
  * Date: 2021
  **************************************************************************/
  
  DROP TABLE IF EXISTS SOURCES.ONCOTREE_TREE;
  CREATE TABLE SOURCES.ONCOTREE_TREE
  (
     ANCESTOR_CODE      TEXT,
     ANCESTOR_NAME      TEXT,
     DESCENDANT_CODE    TEXT,
     DESCENDANT_NAME    TEXT,
     VOCABULARY_DATE    DATE,
     VOCABULARY_VERSION VARCHAR (200)
  );