在 PL/SQL 中使用 Bulk collect 到表对象类型中

Question

谁能告诉我为什么我在编译过程时遇到 PL/SQL 错误：

错误 (11,23)：PLS-00403：表达式“USER_DETAILS_LIST”不能用作 SELECT/FETCH 语句的 INTO 目标。

这里是对象和过程：

CREATE OR REPLACE TYPE  USERID IS OBJECT
(
 USERID             VARCHAR2(50)
);

CREATE OR REPLACE TYPE  USERID_LIST AS TABLE OF  USERID;

CREATE OR REPLACE TYPE  USER_DETAILS IS OBJECT
(
 USERID             VARCHAR2(50),
 ORGANIZATION       VARCHAR2(200),
 EMAIL              VARCHAR2(200),
 FIRSTNAME          VARCHAR2(200),
 LASTNAME           VARCHAR2(200),
 FULLNAME           VARCHAR2(200)
);

CREATE OR REPLACE TYPE  USER_DETAILS_LIST AS TABLE OF  USER_DETAILS;

CREATE OR REPLACE PROCEDURE GET_USER_DETAILS_FOR_NOTIF(USERID_LIST IN USERID_LIST,
    USER_DETAILS_LIST IN  USER_DETAILS_LIST) IS

BEGIN
    SELECT  USER_DETAILS(USER_ID,
                         ORGANIZATION,
                         EMAIL,
                         FIRSTNAME,
                         LASTNAME,
                         FULLNAME)
            BULK COLLECT INTO USER_DETAILS_LIST
            FROM    USERS_TBL
            WHERE   USER_ID IN (SELECT USERID
                                  FROM TABLE( USERID_LIST));
END;

Answer 1

在过程签名中，USER_DETAILS_LIST需要指定为IN OUT而不是IN，如：

CREATE OR REPLACE PROCEDURE GET_USER_DETAILS_FOR_NOTIF(USERID_LIST IN USERID_LIST,
    USER_DETAILS_LIST IN OUT USER_DETAILS_LIST)
    ...