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Import or export text (.txt or .csv) files - Microsoft Support
There are two ways to import data from a text file with Excel: you can open it in Excel, or you can import it as an external data range. To export data from Excel to a text file, use the Save As command and change the file type from the drop-down …
Sort data in a table - Microsoft Support
Sorting is one of the most common tools for data management. In Excel, you can sort your table by one or more columns, by ascending or descending order, or do a custom sort. Sort the table. Select a cell within the data. Select Home > Sort & Filter. Or, select Data > Sort. Select an option: