如何对复杂结构使用蜂巢的explode（）函数？

Question

我的蜂巢表如下：

CREATE EXTERNAL TABLE sample(id STRING,products STRUCT<urls:ARRAY<STRUCT<url:STRING>>,product_names:ARRAY<STRUCT<name:STRING>>,user:ARRAY<STRUCT<user_id:STRING>>>)
ROW FORMAT SERDE 'org.openx.data.jsonserde.JsonSerDe'
STORED AS TEXTFILE
LOCATION ‘/user/input/sample’;

有没有办法分解产品字段，以便它将url，name，user_id存储到三个不同的列中？

有人可以建议我就同一件事....

Answer 1

您应该能够按如下方式爆炸三个阵列

select url, product_name, user_id from sample
lateral VIEW explode(products.urls) A as url
lateral VIEW explode(products.product_names) B as product_name
lateral VIEW explode(products.user) C as user_id

;