How do I delete columns in a data table with their names containing "UL" or "LL" or "UCL" or "LCL" or "USL" or "LSL" and the column containing only "." (NOT empty)
I have a large dataset on hand and want to delete all columns whose name contain "UL" or "LL" or "UCL" or "LCL" or "USL" or "LSL" and the whole column...
mengzy1974