MySQL CONCAT returns NULL if any field contain NULL

Question

I have following data in my table \"devices\"

affiliate_name  affiliate_location  model     ip             os_type    os_version 

cs1             inter             


        

Answer 1

To have the same flexibility in CONCAT_WS as in CONCAT (if you don't want the same separator between every member for instance) use the following:

SELECT CONCAT_WS("",affiliate_name,':',model,'-',ip,... etc)