1. A device comprising: a processor; and memory storing instructions that, when executed by the processor, cause a graphical user interface to be displayed, the graphical user interface comprising: a selection area that includes representations of queryable fields within a data source; and a visualization area for displaying data visualizations based on queries against the data source, wherein the visualization area includes: a root level data visualization representing results of a query against the data source based on a particular user-selected one of the queryable fields, the results identified from the data source based on the user-selected one of the queryable fields; and a child-level data visualization that represents a merger of query results associated with: a combination of a particular data point within a displayed data visualization and a first user-selected one of the queryable fields; and a combination of another particular data point within a displayed data visualization and a second user-selected one of the queryable fields.