In some cases, when you analyze database tables that have some
duplicate records and a join clause, using an SQL business rule, the join results show
that there are more rows in the joint than in the analyzed table.
You can generate a ready-to-use analysis to analyze these duplicate
records. The results of this analysis help you to better understand why there are more
records in the join results than in the table.
Procedure
-
After creating and executing an analysis on a table that has
duplicate records as outlined in Creating a table analysis with an SQL business rule with a join condition, click the Analysis Results tab at the
bottom of the analysis editor.
-
Right-click the join results in the second table and select
Analyze duplicates.
The Column Selection
dialog box opens with the analyzed tables selected by default.
-
Modify the selection in the dialog box if needed and then click
OK.
Two column analyses are generated and listed under the
Analyses folder in the
DQ Repository tree view and are open in the
analysis editor.
-
Save the analysis and press F6 to
execute it.
The analysis results show two bars, one representing the row
count of the data records in the analyzed column and the other representing the
duplicate count.
-
Click Analysis Results
at the bottom of the analysis editor to access the detail result view.
-
Right-click the row count or duplicate count results in the
table, or right-click the result bar in the chart itself and select:
Option
|
To...
|
View
rows
|
open a view on a list of all data rows or
duplicate rows in the analyzed column. |
View
values
|
open a view on a list of the duplicate
data values of the analyzed column. |