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In a tMap, when several primary key on a foreign table are defined, if all of thoses primary key are not fill then Talend makes a Cartesian product.
You can find an example in the attached file. In this example, I have all the cartesian value with the "c" value on "a" value.
Can someone tell me if it's a new feature or a bug ?
I don't understand your request well. What do you want to do? If you just want to do a inner join, check the 'inner join' button.