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.
  """rename_csv_to_file
  
  Revision ID: b92d69a6643c
  Revises: 32646df09c64
  Create Date: 2021-09-19 14:42:20.130368
  
  """
  
  # revision identifiers, used by Alembic.
  revision = "b92d69a6643c"
  down_revision = "32646df09c64"
  
  import sqlalchemy as sa
  from alembic import op
  
  
  def upgrade():
      with op.batch_alter_table("dbs") as batch_op:
          batch_op.alter_column(
              "allow_csv_upload",
              new_column_name="allow_file_upload",
              existing_type=sa.Boolean(),
          )
  
  
  def downgrade():
      with op.batch_alter_table("dbs") as batch_op:
          batch_op.alter_column(
              "allow_file_upload",
              new_column_name="allow_csv_upload",
              existing_type=sa.Boolean(),
          )
  
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.
  """rename_csv_to_file
  
  Revision ID: b92d69a6643c
  Revises: 32646df09c64
  Create Date: 2021-09-19 14:42:20.130368
  
  """
  
  # revision identifiers, used by Alembic.
  revision = "b92d69a6643c"
  down_revision = "32646df09c64"
  
  import sqlalchemy as sa
  from alembic import op
  from sqlalchemy.engine.reflection import Inspector
  
  
  def upgrade():
      try:
          with op.batch_alter_table("dbs") as batch_op:
              batch_op.alter_column(
                  "allow_csv_upload",
                  new_column_name="allow_file_upload",
                  existing_type=sa.Boolean(),
              )
      except sa.exc.OperationalError:
          # In MySQL 8.0 renaming the column rename fails because it has
          # a constraint check; we can safely remove it in that case, see
          # https://github.com/sqlalchemy/alembic/issues/699
          bind = op.get_bind()
          inspector = Inspector.from_engine(bind)
          check_constraints = inspector.get_check_constraints("dbs")
          for check_constraint in check_constraints:
              if "allow_csv_upload" in check_constraint["sqltext"]:
                  name = check_constraint["name"]
                  op.drop_constraint(name, table_name="dbs", type_="check")
  
          # try again
          with op.batch_alter_table("dbs") as batch_op:
              batch_op.alter_column(
                  "allow_csv_upload",
                  new_column_name="allow_file_upload",
                  existing_type=sa.Boolean(),
              )
  
  
  def downgrade():
      with op.batch_alter_table("dbs") as batch_op:
          batch_op.alter_column(
              "allow_file_upload",
              new_column_name="allow_csv_upload",
              existing_type=sa.Boolean(),
          )
  
subject: Drop constraint (#17275)