Queries are based on the data set out in the reports of political parties.
Queries can be used to filter out only such information that is of interest, and to see the data of reports and reporting persons in several formats.
When preparing a query, the purpose of the query has to be set, defining which data and in which format is requested, and the data filters have to be chosen accordingly. 

A political party that had no revenues during the chosen period is not shown in the table.