BigQuery COUNT(DISTINCT value) vs COUNT(value)

Question

I found a glitch/bug in bigquery. We got a table based on Bank Statistic data under the starschema.net:clouddb:bank.Banks_token

If i run the following query:

Answer 1

I've used EXACT_COUNT_DISTINCT() as a way to get the exact unique count. It's cleaner and more general than COUNT(DISTINCT value, n > numRows)

Found here: https://cloud.google.com/bigquery/query-reference#aggfunctions