a46a17bfd29b_batches_versions_relation.py 文件源码

def downgrade():
    """Downgrade the database to an older revision."""
    # commands auto generated by Alembic - please adjust! ###
    op.add_column('batch', sa.Column('epvs', postgresql.JSONB(), autoincrement=False,
                  nullable=True))
    op.drop_table('batches_versions')
    # end Alembic commands ###