Sql 在Google BigQuery中按用户和月份分组

我对BigQuery非常陌生，我编写了以下查询：

select
email,
min(address.zip) as zip,
min(country) as country,
min(source),
min(created_at) as first_order,
max(created_at)as last_order,
count(order_number) as number_orders,
sum(total_price) as total_spent
from orders_data
group by email

它给我的是一个表，其中所有订单都按客户分组，输出如下：

email | zip | country | source | first_order | last_order | number_orders | total_spent |

我想补充的是另一个按月分组。我希望每月有每个客户的总花费和订单数量（电子邮件）

根据更简单的方法，结果可能如下所示：

email | zip | country | source | first_order | last_order | number_orders | total_spent | 2017_January_spent | 2017_January_num_orders | 2017_February_spent | 2017_February_num_orders | ... | 

 month  | email | zip | country | source | first_order | last_order | number_orders | total_spent | 2017_January_spent | 2017_January_num_orders | 2017_February_spent | 2017_February_num orders | ... | 
 01.2017| cust_A|
 02.2017| cust_A|
 03.2017| cust_A|

或按行分组，如下所示：

email | zip | country | source | first_order | last_order | number_orders | total_spent | 2017_January_spent | 2017_January_num_orders | 2017_February_spent | 2017_February_num_orders | ... | 

 month  | email | zip | country | source | first_order | last_order | number_orders | total_spent | 2017_January_spent | 2017_January_num_orders | 2017_February_spent | 2017_February_num orders | ... | 
 01.2017| cust_A|
 02.2017| cust_A|
 03.2017| cust_A|

不确定是否有帮助，但我的数据范围是2017年到2020年，我的时间戳变量“在创建时”如下所示：2020-01-02 16:20:12 UTC

我尝试过添加

groupbymoth（在创建时）

并使用

timestamp\u trunc

玩，但失败了

非常感谢您的帮助

多谢各位

为您的列类型使用或使用适当的函数：

select timestamp_trunc(created_at, month) as mon, email,
       min(address.zip) as zip, min(country) as country, min(source),
       min(created_at) as first_order, max(created_at)as last_order,
       count(order_number) as number_orders, sum(total_price) as total_spent
from orders_data
group by mon, email
order by mon, email;

---

嘿谢谢你的快速回复。我已经尝试了代码，但不幸的是它给出了以下错误：参数类型的函数DATE\u TRUNC没有匹配的签名：TIMESTAMP，DATE\u TIME\u PART。支持的签名：DATE\u TRUNC（DATE，DATE\u TIME\u PART）在[2:1]-您知道问题可能是什么吗？@emil\u rore。然后您需要

时间戳\u trunc（）

。