Categorise Columns by initials
I'm trying to list available categories of columns based on the first 3 letters of the column title. I can list all the available values readily but I have many duplicates. Summarize doesn't obviously work for anything but a list of columns and what I have is a list of initials. I tried this with no luck. Any help appreciated. dt = Current Data Table();
dt << Clear Column Selection();
colList
...