如何在peewee中显示相同列值项的列表？

Question

如何在python peewee中使用group_by

这是我的桌子：

   order_id    |              eatery_id
---------------+--------------------------------------
 1596949079845 | 8e0c6adc-a65e-4a9b-95d2-82284299719d
 1596949235150 | 8e0c6adc-a65e-4a9b-95d2-82284299719d
 1596949298783 | 8e0c6adc-a65e-4a9b-95d2-82284299719d
 1596953145084 | 8e0c6adc-a65e-4a9b-95d2-82284299719d
 1596953145084 | 184fa936-9835-449c-ac8c-fb72a789a96a
 1596953600173 | 8e0c6adc-a65e-4a9b-95d2-82284299719d
 1596953600173 | 184fa936-9835-449c-ac8c-fb72a789a96a
 1596953600173 | 184fa936-9835-449c-ac8c-fb72a789a96a
 1597322217541 | 8e0c6adc-a65e-4a9b-95d2-82284299719d
 1597322217541 | 8e0c6adc-a65e-4a9b-95d2-82284299719d
 1597322217541 | 8e0c6adc-a65e-4a9b-95d2-82284299719d
 1597322506231 | 8e0c6adc-a65e-4a9b-95d2-82284299719d
 1597322506231 | 8e0c6adc-a65e-4a9b-95d2-82284299719d
 1597322506231 | 184fa936-9835-449c-ac8c-fb72a789a96a
 1597322506231 | 184fa936-9835-449c-ac8c-fb72a789a96a
 1596449173498 | 184fa936-9835-449c-ac8c-fb72a789a96a
 1596449778585 | 184fa936-9835-449c-ac8c-fb72a789a96a

如果我用SQL写这篇文章，它会像：

SELECT order_id
FROM table_name
WHERE eatery_id = '8e0c6adc-a65e-4a9b-95d2-82284299719d'
GROUP_BY order_id
 

这就是我尝试过的：

query = Purchases.select().where(Purchases.eatery_id == '8e0c6adc-a65e-4a9b-95d2-82284299719d').group_by(Purchases.order_id)

当我运行时，它会给我错误信息：

for q in query:
  print(q.order_id)

此错误显示为：

peewee.InternalError:current transaction is aborted, commands ignored until end of transaction block

Answer 1

该错误通常意味着以前执行的查询有错误，而现在事务处于错误状态，需要回滚

文档中有使用GROUPBY:http://docs.peewee-orm.com/en/latest/peewee/querying.html#aggregating-records的示例