if you are using live connection in tableau then we use 1st option to refresh the data but when u are using extract data then to refresh extract use 2nd option to refresh extracted data.
please let me know if it helps.
Thanks for fast reply. If I using extract, can I use the option 1 to refresh my data?
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No, 1st option will not refresh the extract data to refresh the extracted data use 2nd option.
Thanks very much for the answer. Get the idea.