UNNEST 和加入 |大查询

Question

我可以使用以下代码在 Big Query 中取消嵌套一个表：

SELECT * EXCEPT(instance, line_items) FROM (
SELECT *, ROW_NUMBER() OVER(PARTITION BY id) AS instance
  FROM `shopify.orders`
), UNNEST(line_items) as item

WHERE 实例 = 1

此外，我可以使用以下代码将这个表（未嵌套）与另一个表连接起来：

SELECT * FROM (
  SELECT *, ROW_NUMBER() OVER(PARTITION BY id) AS instance
  FROM `shopify.orders`
  JOIN `google_analytics.GA`
  ON name = TransactionID

)

WHERE instance = 1

但是，我不确定如何加入这两个表，同时仍然取消我第一个查询中的值。知道如何将 UNNESTED 表与另一个表连接起来吗？

Answer 1

join 不工作吗？

SELECT * EXCEPT(instance, line_items)
FROM (SELECT *, ROW_NUMBER() OVER(PARTITION BY id) AS instance
      FROM `shopify.orders`
     ) o CROSS JOIN
     UNNEST(o.line_items) as item JOIN
     `google_analytics.GA` ga
      ON name = TransactionID