User ID not showing up in BigQuery

Question

What can be the reason the user_id is null in BigQuery? Data from Analytics is sent to BigQuery but the user_id is not passed along. T

Answer 1

I am operating under the assumption that this field is intentionally held out from all Google Analytics -> BigQuery extracts based on the following:

• https://support.google.com/analytics/answer/6205850?hl=en#limits
  • Of particular note, the line "The User ID value can not be queried as a dimension in reports in either the web interface or the APIs". I take this to mean that it will never leave the confines of Google Analytics, including to BigQuery.
• I have not been able to get anything but null in my tables either.

Sorry I do not have better news for you!