如何使用 BigQuery 从另一个表中获取包含相同项目的交易？

Question

Suppose I have a BigQuery table containing a list of items, bundled together like this:

Bundle Name	Product Name
Bundle 1	Apple
Bundle 1	Watermelon
Bundle 2	Grapes
Bundle 2	Lemon

Then, I also have a BigQuery table containing a list of transactions, where a transaction can contain more than one product, like this:

Transactions ID	Product Name
Transactions 1	Apple
Transactions 1	Watermelon
Transactions 2	Grapes
Transactions 2	Lemon
Transactions 2	Banana
Transactions 3	Pineapple
Transactions 3	Kiwi
Transactions 3	Grapes

I would like to get transactions that contain the exact item from the list of bundles. In this case, I should get Transaction 1 since it has a product combination in a transaction that exactly matches Bundle 1 (Apple and Watermelon) and Transactions 2 because it also has a product combination that matches Bundle 2 (Grapes and Lemon).

I can't use JOIN because if I join the Bundle table and Transaction table using Product Name, Transaction 3 will also be included since it has the same product name as Bundle 2 (Grapes).

How can I do this? Thanks in advance

Answer 1

Consider below approach

select transactionID, bundleName
from (
  select transactionID, array_agg(distinct productName) as products
  from transactions group by transactionID
) t1, (
  select bundleName, array_agg(distinct productName) as products
  from bundles group by bundleName
) t2
where (
  select count(product1) = count(product2)
  from t2.products product2
  left join t1.products product1
  on product1 = product2 
)           

if applied to sample data in your question - output is