Refresh a single table row?


how can I refresh a single table row?

I have two tables that depend on each other. Imagine Table1 has a column that displays the sum of all entries in Table2. If I add an entry to Table2, I of course want the currently selected row in Table1 to update the sum.


This is how I’m doing it at the moment, but this refreshes the whole “parent” table, which is not necessary. It would be sufficient to just refresh the cache of a single row. How can this be achieved?