I have played around with this for a few hours and it seems to be going over my head.
I am a novice at SQL and am attempting to create a simple function to concat first_name and last_name rows into a staff_fname table.
Using this code returns the results just fine and populates staff_fname, concatenating each first name and last name entry from the source table:
SELECT
CONCAT (first_name, ' ', last_name) INTO staff_fname
FROM staff;
However, when I try to insert this into a function, it does not work properly:
CREATE FUNCTION connames()
RETURNS varchar(90)
LANGUAGE plpgsql
AS $$
DECLARE staff_fname varchar(90);
BEGIN
SELECT
CONCAT (first_name, ‘ ’, last_name) INTO staff_fname
FROM staff;
RETURN staff_fname;
END;
$$;
When I try to call the function connames(), it only concats and returns one row (the first row). I have tried playing around with LOOP, RETURNS SETOF, and RETURN QUERY to no avail. I am sure it is simple but I can’t figure it out.
2
Answers
It would be like
and execution
Should be simple using language SQL