Question

我试图在SQL3中定义一个在其类型声明中包含嵌套表的类型的表。我不明白为什么我总是得到同样的错误，尽管尝试了几种解决方案。这是一段代码：

create type Composite;
/
create type L_PieceComposite as table of ref Composite;
/
create type Piece as object(
    name VARCHAR(20),
    containedInto L_PieceComposite
)
not final not instantiable;
/
create type PieceQuantity as Object (
    quantity NUMBER,
    pieceref ref Piece
);
/
create type L_PieceQuantity as table of PieceQuantity;
/
create type Composite UNDER Piece(
    cost NUMBER,
    contains L_PieceQuantity
);
/

在我使用的另一个文件中：

create table thePieces of Piece;
CREATE TABLE theComposites of Composite NESTED TABLE contains store as tab7;

但是得到以下错误：

ORA-22913：必须为嵌套表列或属性
指定表名

有人可以帮忙吗？感谢

Answer 1

求助：结论：我们必须小心继承的表。

create table lesComposites of Composite nested table containedInto store as tab5 nested table contains store as tab6;

SQL3 ORA-22913：必须为嵌套表列或属性指定表名

1 个答案: