Oracle 在创建存储过程时出错。 ORA-22905: 无法访问非嵌套表项中的行

Question

大家好，我需要在 Oracle 中使用动态透视来选择记录。我已经完成了使用“antonsPivoting”https://technology.amis.nl/2006/05/24/dynamic-sql-pivoting-stealing-antons-thunder/ 正常工作的查询。

当我在过程中添加查询时，它会给出错误：ORA-22905: cannot access rows from a non-nested table item。

示例表脚本：

CREATE TABLE DEPARTMENT(DEPT_ID NUMBER PRIMARY KEY, DEPT_NAME VARCHAR2(25))

CREATE TABLE EMPLOYEE(EMP_ID NUMBER, EMP_NAME VARCHAR(100), DEPT_ID NUMBER , FOREIGN KEY(DEPT_ID) REFERENCES DEPARTMENT(DEPT_ID))


INSERT INTO DEPARTMENT(DEPT_ID, DEPT_NAME)
SELECT  1, 'HR' FROM DUAL
UNION ALL SELECT 2, 'OPS' FROM DUAL
UNION ALL SELECT 3, 'MKT' FROM DUAL
UNION ALL SELECT 4, 'FIN' FROM DUAL
UNION ALL SELECT 5, 'IT' FROM DUAL
UNION ALL SELECT 6, 'SERV' FROM DUAL

COMMIT;


INSERT INTO EMPLOYEE(EMP_ID, EMP_NAME, DEPT_ID)

SELECT 1, 'A', 1 FROM DUAL
UNION ALL SELECT 1, 'A', 1 FROM DUAL
UNION ALL SELECT 2, 'B', 1 FROM DUAL
UNION ALL SELECT 3, 'C', 2 FROM DUAL
UNION ALL SELECT 4, 'D', 3 FROM DUAL
UNION ALL SELECT 5, 'E', 3 FROM DUAL
UNION ALL SELECT 6, 'F', 4 FROM DUAL
UNION ALL SELECT 7, 'G', 4 FROM DUAL
UNION ALL SELECT 8, 'H', 4 FROM DUAL
UNION ALL SELECT 9, 'I', 5 FROM DUAL
UNION ALL SELECT 10, 'J', 5 FROM DUAL
UNION ALL SELECT 11, 'K', 1 FROM DUAL
UNION ALL SELECT 12, 'L', 1 FROM DUAL
COMMIT;

示例查询脚本运行良好：

SELECT D.DEPT_NAME, COUNT(E.EMP_ID) TOTAL_EMP

FROM DEPARTMENT D
LEFT JOIN EMPLOYEE E ON D.DEPT_ID= E.DEPT_ID

GROUP BY D.DEPT_NAME
;

动态旋转示例运行良好：

select * from table( pivot(  '
SELECT D.DEPT_NAME, COUNT(E.EMP_ID) TOTAL_EMP

FROM DEPARTMENT D
LEFT JOIN EMPLOYEE E ON D.DEPT_ID= E.DEPT_ID

GROUP BY D.DEPT_NAME' ) )

;

添加出错的程序：

CREATE OR REPLACE PROCEDURE GET_EMPLOYEE (P_RESULT OUT SYS_REFCURSOR)
IS
BEGIN 
    OPEN P_RESULT FOR
    select * from table( pivot(  '
SELECT D.DEPT_NAME, COUNT(E.EMP_ID) TOTAL_EMP

FROM DEPARTMENT D
LEFT JOIN EMPLOYEE E ON D.DEPT_ID= E.DEPT_ID

GROUP BY D.DEPT_NAME' ) )

;
    
END
;

Answer 1

您是否创建了 Pivot 函数？

请通过下面已经回答的链接。

Link