Google Cloud Dataprep Documentation Documentation col_multi Parameter To specify multiple columns: Discrete column names are comma-separated. Values for column names are case-sensitive. Where applicable, a range of values can be specified using a tilde (~). Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 3.0 License, and code samples are licensed under the Apache 2.0 License. For details, see our Site Policies. Java is a registered trademark of Oracle and/or its affiliates. Last updated January 23, 2018.