I am struggling trying to do this with Google BigQuery:
I do have a column with dates in this following STRING format:
6/9/2017 (M/D/YYYY)
Easy one, with standard SQL:
#standardSQL SELECT PARSE_DATE('%m/%d/%Y', '6/22/2017') 2017-06-22
https://cloud.google.com/bigquery/docs/reference/standard-sql/functions-and-operators#supported-format-elements-for-date