Question

我昨天在下面运行了以下查询，它运行正常。现在我每次运行它时都会说，“表都没有字段user_id”

select
  all.user_id,
  UTC_USEC_TO_YEAR(timestamp) as time,
  sum(amount) as amount
from foo.bar as all
join (select user_id, max(version) as max_version from foo.bar group by user_id) as latest
on all.version = latest.max_version and all.user_id = latest.user_id
group by all.user_id, time;

请告知。

Answer 1

昨天我们开启了一个微妙的架构验证更改，我们一直试图打开几周。它将使我们能够在将来允许模式演变（例如，向表中添加列），这是客户一直要求的。然而，看起来这种变化会产生意想不到的副作用。我将恢复更改，直到我们确定它没有遇到此问题。

Answer 2

有趣的，

一时兴起，我像这样对所有列进行了前缀并且它有效。它昨天也在工作，所以Matrix中有一些小故障

select
  all.user_id,
  UTC_USEC_TO_YEAR(all.timestamp) as time,
  sum(all.amount) as amount
from foo.bar as all
join (select user_id, max(version) as max_version from foo.bar group by user_id) as latest
on all.version = latest.max_version and all.user_id = latest.user_id
group by all.user_id, time;

如果来自bigquery团队的人可以评论为什么，那就太好了。

谷歌Bigquery表别名有一天工作，现在出错了

2 个答案: