old_contents: """empty message
  
  Revision ID: 8f9ea78776f4
  Revises: 3b7eee912b41
  Create Date: 2022-03-11 13:53:08.996055
  
  """
  
  # revision identifiers, used by Alembic.
  revision = '8f9ea78776f4'
  down_revision = '3b7eee912b41'
  
  from alembic import op
  import sqlalchemy as sa
  
  
  def upgrade():
      op.add_column('user', sa.Column('spam_mark_as_read', sa.Boolean(), nullable=False))
  
  def downgrade():
      op.drop_column('user', 'spam_mark_as_read')
  
new_contents: """empty message
  
  Revision ID: 8f9ea78776f4
  Revises: 3b7eee912b41
  Create Date: 2022-03-11 13:53:08.996055
  
  """
  
  # revision identifiers, used by Alembic.
  revision = '8f9ea78776f4'
  down_revision = '3b7eee912b41'
  
  from alembic import op
  import sqlalchemy as sa
  
  
  def upgrade():
      op.add_column('user', sa.Column('spam_mark_as_read', sa.Boolean(), nullable=False, server_default=sa.sql.expression.false()))
  
  def downgrade():
      op.drop_column('user', 'spam_mark_as_read')
  
subject: Add default to column spam_mark_as_read