google big query standard SQL


google big query standard SQL



I am on Google big query using standard SQL and I am stuck because of the following sql. the name of the error is : Values referenced in UNNEST must be arrays. UNNEST contains expression of type STRING at [1:1155]


SELECT COUNT(DISTINCT user_first_touch_timestamp) as count, event_date as dt
FROM `analytics_173262434.events_20*` AS t
CROSS JOIN UNNEST(event_date) AS event
WHERE parse_date('%y%m%d', _table_suffix) between DATE_sub (current_date(), interval 23 day) and DATE_sub (current_date(), interval 1 day)
GROUP BY event_date









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