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Finding the distinct count from a cassandra column using Tableau

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问题 I am a beginner in Tableau. I have successfully connected Tableau with Cassandra. I am facing an issue now. I am trying to get the distinct count (unique) value from a given column.. The database which I have is like 17 million. (Cassandra DB) I even tried count (Distinct) as shown above. But it is not working as expected. Can anyone help me out with this? Thanks in advance. 来源： https://stackoverflow.com/questions/32889949/finding-the-distinct-count-from-a-cassandra-column-using-tableau

Public Tableau publishes an incorrect graph

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问题 I created the following using Public Tableau But when I publish to tableu (see here), column A is pushed all the way to the right, i.e. Why does this even happen? It makes no sense. 回答1: Looks like the default sort order for [Class] is the data source order. To fix that, right click on Class in the Dimensions list and go to "Default Properties" / "Sort...". In that menu, choose "Alphabetic" in the "Sort by" window. 来源： https://stackoverflow.com/questions/32332054/public-tableau-publishes-an

Disable tableau custom view / remember my changes

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问题 I want to disable the "Remember my changes " or the custom views options on a tableau view. I know it can be disabled by using ":CustomViews=n" parameter on the URL. But i want to disable it from server level. If possible, i would also want to disable it for certain users only. 回答1: It is not currently possible to disable custom views in Tableau Server. As a workaround, site administrators and other authorized users can allow or deny the permission 'Share Customized' which allows saved

Tableau - data contains start / end date, how to make a fixed access for every month between?

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问题 I have an extremely similar issue / set of data as the person from this post .. Tableau month-based bar chart for data with date range however the accepted solution doesn't realistically work for my case. They suggested making 12 calculated fields, one for each month, and pivot and display. The 2 issues I run into with this, is my data spans across 6 years 1. So 6 years x 12 months would be 72+ calculated fields 2. Also, for each additional new month, I'd have to manually create a new

Tableau read and update data source ( From Web data connector) automatically

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问题 I am installed and added data source (web data connector) inside tableau Web data connector URL : http://localhost/datasouceexample/example.html we data connector holds some data. import data from web data connector and created graphs using the data's from the web data connector URL .Generated graph and saved in "tableau public" option. Embed the code inside my web application . Graphs shows perfectly. My question is about the automatic data updation . 1 ) I want to update graph automatically

Tableau - Filter/Parameter For Different Date Ranges

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I am trying to set up a filter or parameter for different date ranges in Tableau, such as: Previous Week Previous 4-Weeks Previous 8-Weeks based on the most recent data in the database. Is this possible? Edit : I should have been more clear here. Is it possible to only have these options in the filter and have it based on the maximum date in the database? Update Based on your comment and updated question, you can do it as you intend, though it isn't as straight-forward. NOTE: I did this very quickly and with a random data set, so it will be important for you to test this thoroughly with your

Tableau - Filter/Parameter For Different Date Ranges

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问题 I am trying to set up a filter or parameter for different date ranges in Tableau, such as: Previous Week Previous 4-Weeks Previous 8-Weeks based on the most recent data in the database. Is this possible? Edit : I should have been more clear here. Is it possible to only have these options in the filter and have it based on the maximum date in the database? 回答1: Update Based on your comment and updated question, you can do it as you intend, though it isn't as straight-forward. NOTE: I did this