Views of the object using

I have a structure of type object as shown below:
< pre >
CREATE TYPE address_t AS OBJECT
(
Street VARCHAR2 (20).
City VARCHAR2 (10),
State CHAR (2),
zip VARCHAR2 (10)
);


CREATE TYPE employee_t AS OBJECT
(
ENO NUMBER,
Ename VARCHAR2 (20).
NUMBER of salary
);

CREATE TYPE employee_list_t AS TABLE of employee_t;

CREATE TYPE dept_t AS OBJECT
(deptno NUMBER,
deptName VARHCAR2 (20),
address address_t,
emp_list employee_list_t
);

CREATE VIEW dept_t WITH the IDENTIFIER of OBJECT (deptno) AS dept_view
SELECT d.deptno, d.deptname,
address_t (d.deptstreet, d.deptcity, d.deptstate, d.deptzip) AS deptaddr,
CAST (TYPE MULTISET)
SELECT e.empno, e.empname, e.salary
FROM emp e
WHERE e.deptno = d.deptno)
AS employee_list_t)
AS emp_list
DEPT d;

< / pre >

What I want to do is to use a variable of type dept_view % ROWTYPE. How this can be done. I get the error as
PL/SQL: ORA-00947: not enough values
< pre >
DECLARE
y employee_list_t: = employee_list_t (employee_t (NULL, NULL, NULL));
x dept_t: = dept_t (NULL, NULL, address_t (NULL, NULL, NULL, NULL), y);
BEGIN
SELECT *.
X
OF dept_view
WHERE ROWNUM = 1;
END;
< / pre >

In circumstances where Oracle treats attributes of type object as separate columns (tables of objects, views of the object, functions table), use the operator (VALUE or virtual OBJECT_VALUE) (previously SYS_NC_ROWINFO$) to access the entire object type, for example

DECLARE
   x dept_t;
BEGIN
   SELECT VALUE (dv)
     INTO x
     FROM dept_view dv
    WHERE ROWNUM = 1;
END;
/

DECLARE
x dept_t;
BEGIN
SELECT dv.object_value
X
THE dv dept_view
WHERE ROWNUM = 1;
END;
/

Note: of course you can rebuild the object type also Cool online did, but there is a risk of an additional burden and maintenance, not to mention the issue of substituted etc. builders.

Padders

Tags: Database

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