old_contents: """add enqueue_job column to smtpserver table
  
  Revision ID: 849170064430
  Revises: a63df077051a
  Create Date: 2018-11-22 10:04:00.330101
  
  """
  
  # revision identifiers, used by Alembic.
  revision = '849170064430'
  down_revision = 'a63df077051a'
  
  from alembic import op
  import sqlalchemy as sa
  
  
  def upgrade():
      try:
          op.add_column('smtpserver', sa.Column('enqueue_job', sa.Boolean(), nullable=False, server_default=sa.false()))
      except Exception as exx:
          print("Could not add column 'smtpserver.enqueue_job'")
          print(exx)
  
  
  def downgrade():
      op.drop_column('smtpserver', 'enqueue_job')
  
new_contents: """add enqueue_job column to smtpserver table
  
  Revision ID: 849170064430
  Revises: a63df077051a
  Create Date: 2018-11-22 10:04:00.330101
  
  """
  
  # revision identifiers, used by Alembic.
  revision = '849170064430'
  down_revision = '48ee74b8a7c8'
  
  from alembic import op
  import sqlalchemy as sa
  
  
  def upgrade():
      try:
          op.add_column('smtpserver', sa.Column('enqueue_job', sa.Boolean(), nullable=False, server_default=sa.false()))
      except Exception as exx:
          print("Could not add column 'smtpserver.enqueue_job'")
          print(exx)
  
  
  def downgrade():
      op.drop_column('smtpserver', 'enqueue_job')
  
subject: Update down-revision of queue migration script