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 DagTags table
  
  Revision ID: 7939bcff74ba
  Revises: fe461863935f
  Create Date: 2020-01-07 19:39:01.247442
  
  """
  
  import sqlalchemy as sa
  from alembic import op
  
  # revision identifiers, used by Alembic.
  revision = '7939bcff74ba'
  down_revision = 'fe461863935f'
  branch_labels = None
  depends_on = None
  
  
  def upgrade():
      """Apply Add DagTags table"""
      op.create_table(
          'dag_tag',
          sa.Column('name', sa.String(length=100), nullable=False),
          sa.Column('dag_id', sa.String(length=250), nullable=False),
          sa.ForeignKeyConstraint(['dag_id'], ['dag.dag_id'], ),
          sa.PrimaryKeyConstraint('name', 'dag_id')
      )
  
  
  def downgrade():
      """Unapply Add DagTags table"""
      op.drop_table('dag_tag')
  