Question

I have a set of table as following

customer(cus_id,cus_first_name,cus_last_name);
insert into customer values ('c001', 'tan', 'wah khang');

I want to create a select statement to display the first name join with the last name.
Example :

tan wah khang

is that possible?

Answer 1

You can use the (this is not called “join” but) concatenation *|| (double pipe)* operator:

SELECT (cus_first_name || ' ' || cus_last_name) AS full_name
FROM customer