Linked columns: showing a field from a related table — What it can and can’t do

A linked column is a Lookup that nobody chose to keep, so most of the grid treats it as exactly that: • Resize, freeze, reorder, hide — all work normally. • CSV export includes it, under whatever you named it. • Public share links publish it, so a link can carry context from a table the reader never sees. • Permissions are enforced on the route, at every hop and at the far end — see Permissions travel with the route. Three things it deliberately does not do, all for the same reason: the value isn’t stored anywhere, it’s worked out per row as the page loads. • You can’t sort by it, and it isn’t offered in the sort menu — there’s nothing in the database to order on. • You can’t total it in the summary row. • You can’t filter on it from the column menu. Use Filter by a linked field in the filter bar instead, which travels the same route and is fully supported; the column menu points you there. If you find yourself needing to sort or total one, that’s the signal the route belongs to the table: add a Lookup or Rollup field and you get all three.