Pentaho Data Integration Data Source Failed to preview the Query
Hello,
When I try to use data source of Pentaho Data Integration in Pentaho BI Suite 4.5 to have a preview of some query, an error message appears. And the message says that the query could not be previewed.
Could some expert advice what I shall do to fix this error? Any solutions are welcome. Thank you very much.
Pentaho Data Integration Data Source
Failed to preview the Query.








