What is a filter in looker?
Definition. The filter parameter declares a filter-only field and a name for that filter. A user can add filter-only fields as filters when exploring, but they cannot add them to their result set. These filter-only fields are made useful via templated filters, which are an advanced LookML topic.
How do I filter my looker dashboard?
Adding dashboard filters. To get started, make sure the dashboard is in edit mode and that you have at least one query tile or Look-linked tile. Click Filters in the top toolbar, and then click Add Filter.