Unstack operation BigQuery

Is it possible in Big Query to perform an unstack operation such that

Name  Age Height   
John  27   183
Maria 32   169 

to obtain

Name  attr   value 
John  Age     27
John  Height  183
Maria Age     32
Maria Height  169

>Solution :

You can simply UNPIVOT it.

SELECT * FROM (
  SELECT 'John' Name, 27 Age, 183 Height
   UNION ALL
  SELECT 'Maria', 32, 169
) UNPIVOT (value FOR attr IN (Age, Height))

• https://cloud.google.com/bigquery/docs/reference/standard-sql/query-syntax#unpivot_operator