NOTE: From version 5.2.2 of Open Source BI Helical Insight, we have provided DIRECT inbuilt support to Excel as a datasource. This method is much more simpler to use and recommended. Please refer to this link to learn more: https://www.helicalinsight.com/usage-of-flat-files-excel-in-helical-insight/ If you are using older version or want to use Apache drill, then continue to
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