It's quite flexible in how you structure your data, so besides rows and columns, "tags" can be children or parents. It even has an explicit tagging feature wher

It's quite flexible in how you structure your data, so besides rows and columns, "tags" can be children or parents. It even has an explicit tagging feature where you define tags that can easily be applied. See also the "Hierarchy Swap" feature as a powerful tagging related feature. On the downside, the built-in search is purely textual, not structural, so your example query can't be done. Structural queries would be an awesome addition though.