What is the purpose of the group_label parameter in LookML?

The group_label parameter in LookML is designed to facilitate better organization and grouping of fields within the field picker in Looker. By using this parameter, developers can combine multiple related fields into a single custom group, making it easier for users to navigate and select the fields they need when building reports or dashboards.

When fields are logically grouped together under a meaningful label, it enhances the user experience by providing clarity and relevance, thus allowing users to quickly find and utilize related metrics and dimensions without sifting through a long list of fields. This is particularly advantageous in complex data models where a clear categorization improves usability and understanding of the available data options.