About this task
This step is optional. You can decide to create a business rule without a join condition
and use it with only the WHERE clause in the table analysis.
For an example of a table analysis with a simple business rule, see Creating a table analysis with a simple SQL business rule.
For an example of a table analysis with a business rule that has a join
condition, see Creating a table analysis with an SQL business rule with a join condition.
Procedure
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In the SQL business rule editor, click Join
Condition to open the corresponding view.
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Click the [+] button to add a row in the
Join Condition table.
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Define the join condition and save it.
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Expand the Metadata folder in the DQ
Repository tree view, and browse to the columns in the tables on which
you want to create the join condition.
This join condition will define the relationship between a table A and a table B
using a comparison operator on a specific column in both tables. In this example, the
join condition will compare the "name" value in the Person and
Person_Ref tables that have a common column called
name.
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Drag-and-drop the columns from the DQ Repository tree view
to the Join Condition table.
A dialog box is displayed prompting you to select where to place the column: in
TableA or in TableB.
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Select a comparison condition operator between the two columns in the
tables and save your modifications.
In the analysis editor, you can now drop this newly created SQL business
rule onto a table that has an "age" column. When you run the analysis, the
join to the second column is done automatically.
Warning: The table to which to add the business rule must contain at
least one of the columns used in the SQL business rule.