Auto Increment a field of one table while fetching data from another table

Hello I am new to HANA, I want to auto increment a field of a table for which i am fetching data from another table 

for example :  there is a location table with column location id ,location name ,.....and there is a master table from which i am retrieving other details of

the location table except the

location id

and i want to auto increment the location id when i am retrieving the details from master table to location table  ,here the auto_increment operator is not working , so how to do it  ?