def METHOD_NAME():
    # ### commands auto generated by Alembic - please adjust! ###
    with op.batch_alter_table("alerts") as batch_op:
        batch_op.add_column(
            sa.Column(
                "database_id", mysql.INTEGER(), autoincrement=False, nullable=False
            )
        )
        batch_op.add_column(sa.Column("sql", mysql.TEXT(), nullable=True))
        batch_op.drop_constraint("alerts_ibfk_3", type_="foreignkey")
        batch_op.drop_constraint("alerts_ibfk_4", type_="foreignkey")
        batch_op.alter_column(
            "crontab", existing_type=mysql.VARCHAR(length=50), nullable=True
        )
        batch_op.drop_column("created_on")
        batch_op.drop_column("created_by_fk")
        batch_op.drop_column("changed_on")
        batch_op.drop_column("changed_by_fk")
    op.drop_index(op.f("ix_sql_observations_dttm"), table_name="sql_observations")
    op.drop_table("sql_observations")
    op.drop_table("sql_observers")
    op.drop_table("alert_validators")
    # ### end Alembic commands ###