--example 1 DECLARE id number(10) := 5; BEGIN IF id = 5 THEN dbms_output.put_line('Value is 5'); END IF; END; --example 2 DECLARE id number(10) := 5; BEGIN IF id = 1 THEN dbms_output.put_line('Value is 1'); elsif id = 5 THEN dbms_output.put_line('Value is 5'); end if; END; --example 3 DECLARE id number(10) := 5; BEGIN IF id = 1 THEN dbms_output.put_line('Value is 1'); elsif id = 5 THEN dbms_output.put_line('Value is 5'); else dbms_output.put_line('Value not found'); end if; END;