Dataview: Create a table that automatically registers nested tags, then lists which files have them

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1

Hey. I’m trying to create a table using the Dataview plugin that creates 2 columns: One automatically lists every nested tag under “#mc”, and the other lists every file using that particular tag.

For example:
| Nested Tag | Files |
| — | — |
| #mc/john | [[Chapter 1]] [[Chapter 2]] [[Chapter 5]] |
| #mc/richard | [[Chapter 2]] [[Chapter 3 ]] [[Chapter 6]] |

Essentially, it would automatically know when I create a new nested tag under “#mc” and then list it as it’s own row in the table, alongside every file that contains it.

I did a lot of googling and kind of frankensteined a solution that almost works. It’s able to list every file that specifically has the exact text of “#mc”, and not any nested tags, unless I manually write those down.

The code:
TABLE WITHOUT ID (tag + "(" + length(rows) + ")") AS "Tag", link(sort(rows.file.name)) AS "Files"
FLATTEN file.etags AS tag
WHERE contains(file.etags, "#mc")
WHERE tag = "#mc"
GROUP BY tag
SORT length(rows) DESC

I need some kind of “wildcard’ search I could append to “#mc” so it automatically assumes any nested tag is part of the query.

I’m not particularly skilled in Dataview, and unfortunately a lot of it is just a bit out of my grasp of intelligence, but I’d really like to try and get things tidy and organized in my vault using it, so any help is appreciated, thanks. I can clarify anything that needs it.

2

Figured it out:

The solution is this:
```dataview
TABLE WITHOUT ID (tag + " (" + length(rows) + “)”) AS “Tag”, link(sort(rows.file.name)) AS “Files”
FLATTEN file.etags AS tag
WHERE startswith(tag, “#TAGHERE/”)
GROUP BY tag
SORT length(rows) DESC
```

This makes sure every new nested tag is counted, and lists every file that has said tag.

3

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