d054eefc4c5b_add_unique_constraint_on_component_name.py 文件源码

def downgrade():
    table_prefix = context.config.get_main_option('table_prefix')
    table_name = table_prefix + 'component'
    with op.batch_alter_table(table_name) as batch:
        batch.drop_constraint(
            table_name + '_component_name_unique',
            type_='unique',
        )