在引导程序下拉列表中搜索

Question

您好，我想知道如何在此下拉菜单中添加搜索选项

SET SERVEROUT ON;
Create or Replace Trigger bi_Shippers
Before INSERT on Shippers
For EACH ROW
ENABLE
DECLARE
v_User VARCHAR2(20);
BEGIN
SELECT user INTO v_User from Dual;
DBMS_OUTPUT.PUT_LINE('You Just inserted a Line'||v_User);
END;

INSERT into shippers(shipperid) VALUES(5);