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Martin Hope
user062
Asked: 2022-05-22 13:30:42 +0800 CST
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我在 oracle 的嵌套表中插入时遇到问题

这些是相关的类型和表格；

create type movies_type as Table of ref movie_type;

create type actor_type under person_type

(

starring movies_type

) Final;

create table actor of actor_type

NESTED TABLE starring STORE AS starring_nt;

这就是我尝试插入的方式

insert into actor values
(actor_type(29,'Carrie','Fisher',TO_DATE('21/10/1956', 'DD/MM/YY'),TO_DATE('27/12/2016', 'DD/MM/YY'),'USA', movies_type(select ref(m) from movie m where movie_id in (7, 8, 9))));

这不起作用，它给

SQL Error: ORA-00936: missing expression

这不是很有帮助。

我还尝试将 select 语句嵌套在括号中，因为我认为这可能是语法错误

insert into actor values
(actor_type(29,'Carrie','Fisher',TO_DATE('21/10/1956', 'DD/MM/YY'),TO_DATE('27/12/2016', 'DD/MM/YY'),'USA', movies_type((select ref(m) from movie m where movie_id in (7, 8, 9)))));

但它说

SQL ERROR ORA-01427: single-row subquery returns more than one row

所以我把它改成了这个

insert into actor values
(actor_type(29,'Carrie','Fisher',TO_DATE('21/10/1956', 'DD/MM/YY'),TO_DATE('27/12/2016', 'DD/MM/YY'),'USA', movies_type((select ref(m) from movie m where movie_id=7))));

这有效，但这不是我想要的，因为它不允许我有多个值

movies_type

我不明白问题到底是什么，错误消息没有帮助

为什么它说缺少表达？

为什么在第二种情况下它给单行子查询返回不止一行？

非常感谢您。

更新：这里是类型 movie_type 和表电影：

create type movie_type as Object
(
  MOVIE_ID NUMBER(15),
  TITLE VARCHAR(50) ,
  GENRE  VARCHAR(30),
  RELEASE_DATE DATE,
  RUNNING_TIME NUMBER,
  BUDGET NUMBER
) Final;

表创建：

create table MOVIE of movie_type;

ALTER TABLE MOVIE
  ADD CONSTRAINT PK_MOVIE_ID PRIMARY KEY (MOVIE_ID);

ALTER TABLE MOVIE modify TITLE not null;

电影中的相关插入：

INSERT INTO MOVIE (MOVIE_ID, TITLE, GENDER, RELEASE_DATE, RUNNING_TIME, BUDGET) VALUES (7,'Star Wars','epic space opera',TO_DATE('25/05/1977', 'DD/MM/YY'),121,11000000);

INSERT INTO MOVIE (MOVIE_ID, TITLE, GENDER, RELEASE_DATE, RUNNING_TIME, BUDGET) VALUES (8,'The Empire Strikes Back','epic space opera',TO_DATE('17/05/1980', 'DD/MM/YY'),124,18000000);

INSERT INTO MOVIE (MOVIE_ID, TITLE, GENDER, RELEASE_DATE, RUNNING_TIME, BUDGET) VALUES (9,'Return of the Jedi','epic space opera',TO_DATE('25/05/1983', 'DD/MM/YY'),132,32500000);
oracle oracle-11g-r2