How do I cast dd/mm/yyyy string into date in BigQuery?

Question

I have 3 columns 1. dd/mm/yyyy (stored as a string) 2. app_id and #downloads of apps

I have to find unique ids of apps downloaded within a week.

Thank you

Answer 1

Even shorter using standard SQL:

SELECT TIMESTAMP(PARSE_DATE('%d/%m/%Y','23/03/2015'))