Mr responses are given in bold below.
1.edit existing rows or columns values in the dataset within Tableau desktop - No
2.edit display values in dashboard before and after publishing dahsboard either in Tableau server or tableau online - No
3. create new records in the dataset inside Tableau - No
4.extracting data(Columns) with calculated (sum/running sum of field X) from tableau
->here I have a problem saying, It cannot display the agg. values and all the values are showing as undefined - Please attach your packaged workbook so that someone can see and suggest an appropriate solution.
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Tableau is a visualization tool - not designed to "edit" data - if you have data that needs to be changed either do it before you import it into Tableau or consider using Tableau Prep - Prep has some editing capability in addition being able to restructure, aggregate, combine, and pivot data
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