Database Join

The data grid in the transform properties dialog. This allows you to select the data coming in from the source hop. As question marks (?) in the SQL query. When the transform runs, these will be replaced with data coming in from the fields defined from the data grid. The question marks will be replaced in the same order as defined in the data grid. For example, Database Join allows you to run queries looking up the oldest person who bought a specific product as shown below:

The grid is then defined as follows:

When the transform runs, the (?) placeholder defined in the SQL query will be replaced with the incoming productnr field value from the source hop. To define and use multiple parameters, list the fields in order you want them to be replaced in the SQL statement.

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