Hi! I need to join two tables using several attributes as key attributes. What I was doing was concatenate all these attributes and then using the new attribute as a key, but I want to know if there is any better solution than that. In addition, generate concatenation operator only allows to concatenate two attributes at time, so I need to use a lot of boxes to generate my key attribute. So, is there any way to concatenate several attributes at the time? And is there any other way to join tables using several attributes? My solution works OK but my entire process looks huge while is very simple.
Thanks in advance.