old_contents: """hide user numbers
  
  Revision ID: 2945717e3720
  Revises: f8acbd22162
  Create Date: 2016-01-31 00:43:02.777003
  
  """
  from alembic import op
  import sqlalchemy as sa
  from sqlalchemy.sql import table, column
  
  # revision identifiers, used by Alembic.
  revision = '2945717e3720'
  down_revision = 'f8acbd22162'
  branch_labels = None
  depends_on = None
  
  
  def upgrade():
      ### commands auto generated by Alembic - please adjust! ###
      op.add_column('chat_users', sa.Column('show_user_numbers', sa.Boolean(), nullable=False, server_default=True))
      op.add_column('users', sa.Column('show_user_numbers', sa.Boolean(), nullable=False, server_default=True))
      ### end Alembic commands ###
  
  
  def downgrade():
      ### commands auto generated by Alembic - please adjust! ###
      op.drop_column('users', 'show_user_numbers')
      op.drop_column('chat_users', 'show_user_numbers')
      ### end Alembic commands ###
  
new_contents: """hide user numbers
  
  Revision ID: 2945717e3720
  Revises: f8acbd22162
  Create Date: 2016-01-31 00:43:02.777003
  
  """
  from alembic import op
  import sqlalchemy as sa
  from sqlalchemy.sql import table, column
  
  # revision identifiers, used by Alembic.
  revision = '2945717e3720'
  down_revision = 'f8acbd22162'
  branch_labels = None
  depends_on = None
  
  
  def upgrade():
      ### commands auto generated by Alembic - please adjust! ###
      op.add_column('chat_users', sa.Column('show_user_numbers', sa.Boolean(), nullable=False, server_default='true'))
      op.add_column('users', sa.Column('show_user_numbers', sa.Boolean(), nullable=False, server_default='true'))
      ### end Alembic commands ###
  
  
  def downgrade():
      ### commands auto generated by Alembic - please adjust! ###
      op.drop_column('users', 'show_user_numbers')
      op.drop_column('chat_users', 'show_user_numbers')
      ### end Alembic commands ###
  
subject: Make server_default a string.