BigQuery CTE Example

bq_cte.sql

WITH basket_1 AS (
  SELECT *
  FROM UNNEST([
    STRUCT("apple" AS item_name, 2 AS quantity),
          ("banana", 0),
          ("pear", 4)
  ])
),
basket_2 AS (
  SELECT *
  FROM UNNEST([
    STRUCT("apple" AS item_name, 3 AS quantity),
          ("pear", 1),
          ("banana", 5)
  ])
)
SELECT b1.item_name, b1.quantity as b1_quantity, b2.quantity as b2_quantity
FROM basket_1 b1
INNER join basket_2 b2
  ON b1.item_name = b2.item_name;