old_contents: # 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.
  """Delete table_name unique constraint in mysql
  
  Revision ID: 18532d70ab98
  Revises: e5ef6828ac4e
  Create Date: 2020-09-25 10:56:13.711182
  
  """
  
  # revision identifiers, used by Alembic.
  revision = "18532d70ab98"
  down_revision = "e5ef6828ac4e"
  
  from alembic import op
  
  
  def upgrade():
      try:
          # index only exists in mysql db
          with op.get_context().autocommit_block():
              op.drop_constraint("table_name", "tables", type_="unique")
      except Exception as ex:
          print(ex)
  
  
  def downgrade():
      pass
  
new_contents: # 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.
  """Delete table_name unique constraint in mysql
  
  Revision ID: 18532d70ab98
  Revises: 3fbbc6e8d654
  Create Date: 2020-09-25 10:56:13.711182
  
  """
  
  # revision identifiers, used by Alembic.
  revision = "18532d70ab98"
  down_revision = "3fbbc6e8d654"
  
  from alembic import op
  
  
  def upgrade():
      try:
          # index only exists in mysql db
          with op.get_context().autocommit_block():
              op.drop_constraint("table_name", "tables", type_="unique")
      except Exception as ex:
          print(ex)
  
  
  def downgrade():
      pass
  
subject: Fix alembic migration (#11110)