select/display last inserted serial id in postgres

Question

in sql server I do like this:

insert into foo(name) values(\'bob\')
select @@identity;

so I get a query/scalar result displayed

how to

Answer 1

A good way is using RETURNING id. Here is a short example using PL/pgSQL:

        DECLARE
        nivel1 RECORD;
        resultId BIGINT;
        BEGIN
          FOR nivel1 IN SELECT * FROM primary_table LOOP
            INSERT INTO second_table(id, field2, field3) VALUES (DEFAULT, "value2", "value3") RETURNING id INTO resultId;
            RAISE NOTICE 'Inserted id: %s', quote_literal(resultId);
          END LOOP;
        RETURN;
        END

It works for me!