Reporting with Hadoop - Big Data Made Easy: A Working Guide to the Complete Hadoop Toolset - page 350

Figure 11-28. Results for a single-column report
Multi-Column Reports
In the same way that a single-column report is created, multi-column reports can be generated. When I select the
columns on which the report will be drawn, I press the Control key and select “multiple columns.”
The report shown in Figure 11-29 was created from four columns in the trade.rawtrans table: “amount”,
“department” (dept), “supplier”, and “export area” (exparea). The Data mining Type parameter tells Talend what type
of data it is examining. For the “amount” column, I set it to Interval because that column contains numeric values;
I set it to Unstructured Text for the other columns, as they are strings. The simple statistics displayed in Figure 11-29
include the column row count and counts for distinct, duplicate, and unique values. Clicking the Run icon then runs
the report and produces the bar graph shown on the right.