UNNEST(hit.eCommerceAction), Google Bigquery

Question

I used the same logic to unnest hit.eCommerceAction, but it\'s not working as other fields. Any help on this problem? Also, Is the max(if()) function the right function to use t

Answer 1

I can reproduce the error with a simpler query:

#standardSQL
SELECT DISTINCT hit.eCommerceAction.action_type 
FROM `73156703.ga_sessions_20170109` t
  , UNNEST(hits) hit
  , UNNEST(hit.customDimensions) customDimensions
  , UNNEST(hit.eCommerceAction) as eCommerceAction

The issue here is that eCommerceAction is not a REPEATED record, hence there is no array to UNNEST.

Fixed query:

#standardSQL
SELECT DISTINCT hit.eCommerceAction.action_type 
FROM `ga_sessions_20170109`  t
  , UNNEST(hits) hit
  , UNNEST(hit.customDimensions) customDimensions