Cosimo, I can't answer your question, because I was able to import your file without any trouble. (See attached.) Tableau had troubles guessing what your data was about. For some reason it thought all your measures were string data, instead of number data. To correct this I first changed the data type to number, and then converted them to Measures.
By the way that's a fairly high click rate you have. What website is this?
Cosimo.twbx.zip 297.0 KB
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Tableau has problems with CSV files for different national locales. If your decimal separator is , in your locale settings then you can have problems.
I never had a chance to load CSV files with my Hungarian or German locale settings
It will be a shame but change your settings to English US and then you will be able to load your file.
Maybe this is the most biggest / annoying thing in Tableau - they simply cannot support countries where the separators are different.
is this still true in Tableau 8.0? No way to set the decimal separator when importing csv??
I think it is still true in Tableau 8.0 and 8.1.
The way around this is to create a schema.ini file, which is a text file we create ourselves in the same folder where the csv is saved.
See various examples on this forum: Space Search | Tableau Support Community
Official documentation from Microsoft: Schema.ini File (Text File Driver)