¿Puedo saber quiénes son los 'nuevos contribuyentes'?

[Ed_S]

Thanks @pfaffman - I thought that might be the answer although I’ve never delved into that world.

(Superseded) What cool data explorer queries have you come up with?

This topic became too long to be easily searched and has been broken down into separate topics. If you have any questions about how to write a Data Explorer query, or have one to share, please start a new topic in the data & reporting category and tag it with the sql-query tag. For an alternative searchable list of queries that were in this topic, see @SidV’s query list on GitHub.