I have a workbook that contains 2 sheets. Column A is Part number and Column B is Qty for both sheets. Sheet 1 contains over 500,000 line items. I want to take sheet 2 column A and find the part number in sheet 1 (A) and populate the qty column (B) in sheet 2 with the qty (B) from sheet 1. This takes up to an hour or more.
What can be done to ensure it does not take this much time.