当子类型包含嵌套表时创建超类型表时,存储子句出现问题。
我的嵌套表类型是
CREATE TYPE TYP_PROJECT AS OBJECT(
PROJECT_NO CHAR(3),
PROJECT_NAME VARCHAR(70),
PROJECT_TYPE VARCHAR(13),
PROJECT_DURATION INTEGER
)
/
CREATE TYPE TYP_NEST_PROJECT AS TABLE OF REF TYP_PROJECT
/
我的超级类型和子类型创建为
CREATE TYPE TYP_PERSON AS OBJECT(
PERSON_NO CHAR(4),
FIRST_NAME VARCHAR(40),
MIDDLE_NAME VARCHAR(40),
LAST_NAME VARCHAR(40)
)
NOT FINAL;
/
CREATE TYPE TYP_EMPLOYEE UNDER TYP_PERSON(
DATE_JOINED DATE,
SALARY INTEGER,
PROJECTS TYP_NEST_PROJECT
)
/
当我创建超类型的表时,为内部嵌套表指定存储子句时会出错。
CREATE TABLE PERSON_TABLE OF TYP_PERSON(
CONSTRAINT PKEY_PERSON PRIMARY KEY (PERSON_NO)
)
NESTED TABLE PROJECTS STORE AS NTBL_EMPLOYEE_PROJECTS
/
SQL Error: ORA-00904: : invalid identifier
00904. 00000 - "%s: invalid identifier"
*Cause:
*Action:
我有些困惑,所以很感激收到任何帮助!