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

you can use if statement like below

select CONCAT(if(affiliate_name is null ,'',affiliate_name),'- ',if(model is null ,'',affiliate_name)) as model from devices