How to apply same action to ALL rows in same column?

[JannikMM]

Hi there,

I’m building a simple shopping list app. One of the columns is called “quantity”. Whenever the shopping list is “cleared” I want to reset all rows back to “zero”. However how can I select all rows or alternatively apply the same action to all rows? The list is long and I don’t want to select one by one.

Thx

Jannik