Combine similar fields into one from three different data sources

[qlikuser22]

Hi

I am loading data from QVDs, XML. I have a common field called customer Name. I am very much new to qliksense. I want to know how to join these tables to have a single CustomerName.  

Example:

Table1:

customerid, Customer_Name 

from abc.qvd;

Table2:

Companyname, Customer_Name 

from xyz.xml;

Table3:

AmtSpent,Customer_Name

from pqrst.qvd;

I want to have a single field called Cust_Name; 

I tried using concatenate. It's concatenating first two tables but not the table3. 

Please help.

[Lisa_P]

You do not need to combine these tables to have a single field. They will be associated based on common field name and internally one common field is created with all field values in what we call a symbol table. Joining is not required to see all values.