Could someone tell me the best way to copy/paste an entire column values into a new column efficiently (I have more than a million rows)?
The method i'm currently using is to get all values, store them to a list, and then set the values to a column, but I noticed that this is much slower than if you select the column in the table, and click paste on the column.
The reason I'm trying to do this is that I have a script that generates a new column based on some existing columns in the table, but I want to change those same columns later, without changing the new column that I created.
