BigQuery NEST（）返回'错误：发生内部错误'

Question

我试图在BigQuery UI（不是API）中嵌套一个字段，并在试图输出到一个没有展平的表格时不断遇到错误：

Error: An internal error occurred and the request could not be completed.

我使用的NEST()功能，我已经试过这对公众莎士比亚数据集，并继续得到同样的错误。

SELECT corpus, NEST(word) FROM [publicdata:samples.shakespeare] GROUP BY 1 

我的工作ID是：realself-主：bquijob_1bfb8310_153583ecbc2

Answer 1

有上SO相关吨问题如何BigQuery中 产生重复的Fileds /记录，还有许多不同的答案 - 为

来自：NEST是不unflatten结果兼容 - 在
Internal error on NEST when not flattening results

到：一些解决方案来解决这个问题问题使用JS UDF如
Nest multiple repeated fields in BigQuery;
Create a table with Record type column;
create a table with a column type RECORD

有更多的 - 你可以搜索

But surprisingly enough - recently, I found how to make NEST() work almost as it supposed to work!

尝试下面看到的伎俩

SELECT corpus, words 
FROM (
    SELECT corpus, NEST(word) AS words 
    FROM [publicdata:samples.shakespeare] 
    GROUP BY 1 
) AS a 
CROSS JOIN (SELECT 1) AS b 

注意，你必须写结果到表Allow Large Results上Flatten Results关闭