f8013173ef21_prefix_provider.py 文件源码

def downgrade():
    # ### commands auto generated by Alembic - please adjust! ###
    op.drop_constraint('unq_repo_name', 'repository', type_='unique')
    op.create_unique_constraint('unq_repo_name', 'repository', ['owner_name', 'name'])
    # ### end Alembic commands ###