text: from sqlalchemy import (
      MetaData,
      Table,
      Column,
      Text,
      DateTime,
  )
  
  meta = MetaData()
  
  
  def upgrade(migrate_engine):
      meta.bind = migrate_engine
  
      t = Table("demographics_request", meta, autoload=True)
  
      error_datetime = Column("error_datetime", DateTime)
      error_datetime.create(t)
      error_message = Column("error_message", Text)
      error_message.create(t)
  
  
  def downgrade(migrate_engine):
      meta.bind = migrate_engine
      t = Table("demographics_request", meta, autoload=True)
      t.c.error_datetime.drop()
      t.c.error_message.drop()
  