Request to retrieve a list of FullvisitorId - BigQuery - mysql

Question

I want to get a list of FullvisitorId.
But I do not know how to select a list of FullvisitorId in my request ..
the goal is to retrieve a list of FullvisitorId in particular and not all sessions
standardSQL
SELECT
date,
visitStartTime,
TIMESTAMP_SECONDS(visitStartTime) as starttime_UTC,
DATETIME(TIMESTAMP_SECONDS(visitStartTime), "Europe/Amsterdam") as starttime_LOCAL,
totals.timeOnSite,
trafficSource.source,
trafficSource.referralPath,
hits.hour,
hits.minute,
hits.hitNumber,
fullVisitorId,
hits.isEntrance,
hits.isExit,
hits.referer,
hits.eventInfo.eventAction,
hits.latencyTracking.userTimingValue,
hits.type,
CONCAT(CAST(fullvisitorid AS string),CAST(visitid AS string)) AS case_id,
CONCAT(CAST( EXTRACT(YEAR FROM PARSE_DATE('%Y%m%d',date) ) AS string) ,"/",
CAST( EXTRACT(MONTH FROM PARSE_DATE('%Y%m%d',date))AS string) , "/" ,
CAST( EXTRACT(DAY FROM PARSE_DATE('%Y%m%d',date) ) AS string), " " ,
CAST(hits.hour AS string), ":" ,
CAST(hits.minute AS string), ":" ,
CAST(hits.hitNumber AS string)) AS dated,
(SELECT MAX( IF(index = 4,value,NULL) ) FROM UNNEST(hits.customDimensions)) type_page,
(SELECT MAX( IF(index = 6,value,NULL) ) FROM UNNEST(hits.customDimensions)) Univers
FROM `ga-orange-pro-etp.*****.ga_sessions_20190616*` , UNNEST(hits) as hits
WHERE (SELECT MAX( IF(index = 10,value,NULL) ) FROM UNNEST(hits.customDimensions)) = 'prod'

Answer 1

You can simply get the list of distinct fullVisitorId by running:
SELECT
DISTINCT fullVisitorId
FROM `ga-orange-pro-etp.*****.ga_sessions_20190616*` , UNNEST(hits) as hits
WHERE (SELECT MAX( IF(index = 10,value,NULL) ) FROM UNNEST(hits.customDimensions)) = 'prod'
If you remove DISTINCT it will return a value per single row so you will see duplicate fullVisitorId.