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 编写它,它会是这样的:
SELECT order_id
FROM table_name
WHERE eatery_id = '8e0c6adc-a65e-4a9b-95d2-82284299719d'
GROUP_BY order_id
这是我尝试过的:
query = Purchases.select().where(Purchases.eatery_id == '8e0c6adc-a65e-4a9b-95d2-82284299719d').group_by(Purchases.order_id)
当我运行时它给了我错误:
for q in query:
print(q.order_id)
出现此错误:
peewee.InternalError:current transaction is aborted, commands ignored until end of transaction block