BigQuery NEST（）返回'錯誤：發生內部錯誤'

Question

我試圖在BigQuery UI（不是API）中嵌套一個字段，並在試圖輸出到一個沒有展平的表格時不斷遇到錯誤：

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

我使用的NEST()功能，我已經試過這對公衆莎士比亞數據集，並繼續得到同樣的錯誤。

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相關噸問題如何BigQuery中 產生重複的Fileds /記錄，還有許多不同的答案 - 爲

來自：NEST是不unflatten結果兼容 - 在
Internal error on NEST when not flattening results

到：一些解決方案來解決這個問題問題使用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!

嘗試下面看到的伎倆

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，你必須寫結果到表Allow Large Results上Flatten Results關閉