How to mask a specified field in a table when I query it using big query?

I want to mask a specified field in a table when I query it using big query. For example: a table named employee has email-id column, so when I query the table all the email-id field should be masked with ****.

How can I do it using DLP in google?

At the moment, there isn't a way to do this with Cloud DLP/Bigquery during the time of the query.

Possible work around options

• You could create a de-identified copy of your table and query that instead
• You could use column level acls to hide this column from folks who shouldn't see the email addresses https://cloud.google.com/bigquery/docs/column-level-security-intro