text: -- Copyright 2021 Cargill Incorporated
  --
  -- 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.
  -- -----------------------------------------------------------------------------
  
  create TABLE IF NOT EXISTS merkle_radix_change_log_addition (
      id INTEGER PRIMARY KEY,
      tree_id BIGINT NOT NULL,
      state_root VARCHAR(64) NOT NULL,
      parent_state_root VARCHAR(64),
      addition VARCHAR(64),
      FOREIGN KEY(state_root, tree_id) REFERENCES merkle_radix_tree_node(hash, tree_id),
      FOREIGN KEY(parent_state_root, tree_id) REFERENCES merkle_radix_tree_node(hash, tree_id),
      FOREIGN KEY(addition, tree_id) REFERENCES merkle_radix_tree_node(hash, tree_id)
  );
  
  create TABLE IF NOT EXISTS merkle_radix_change_log_deletion (
      id INTEGER PRIMARY KEY,
      tree_id BIGINT NOT NULL,
      successor_state_root VARCHAR(64) NOT NULL,
      state_root VARCHAR(64) NOT NULL,
      deletion VARCHAR(64),
      FOREIGN KEY(successor_state_root, tree_id) REFERENCES merkle_radix_tree_node(hash, tree_id),
      FOREIGN KEY(state_root, tree_id) REFERENCES merkle_radix_tree_node(hash, tree_id),
      FOREIGN KEY(deletion, tree_id) REFERENCES merkle_radix_tree_node(hash, tree_id)
  );
  