Bigquery select distinct values

Question

How to select distinct values in Google Bigquery?

Query:

SELECT DISTINCT cc_info
FROM user
WHERE date = ?

Thanks!

Answer 1

SELECT COUNT(DISTINCT cc_info)
FROM user
WHERE date = ?

is NOT the right query, because DISTINCT is a statistical approximation and is not guaranteed to be exact. See https://cloud.google.com/bigquery/docs/reference/legacy-sql#countdistinct

So better approach is

select EXACT_COUNT_DISTINCT(cc_info) from user where date = ?