DB2 函数返回错误 SQL CODE 4743?

DB2 functions returning error SQL CODE 4743?

一段时间以来,我一直在努力解决这个问题。我有一个名为 Students 的 table,例如:

ID     |Classes    |Priority
----------------------------
3       A51         1
3       B51         2
3       K5B         2
3       M5A         2
4       XN5         1
5       XN5         1
5       A51         2
9       BX1         1
9       BX2         2
9       AK3         2

我现在正在使用 DBVisualizer 来执行我的语句,但我正在尝试使用名为 LISTAGG() 的东西作为 DB2 函数:

SELECT
    ID,
    LISTAGG(classes, ',') within GROUP (ORDER BY Priority) AS GROUPED_CLASSES
FROM
    Students
GROUP BY
    ID;

但是,每次我尝试 运行 这个时,我都会收到这个错误:

1) [Code: -4743, SQL State: 56038]  ATTEMPT TO USE A FUNCTION WHEN THE APPLICATION COMPATIBILITY SETTING IS SET FOR A PREVIOUS LEVEL. SQLCODE=-4743, SQLSTATE=56038, DRIVER=4.22.29
2) [Code: -514, SQL State: 26501]  THE CURSOR SQL_CURLH200C1 IS NOT IN A PREPARED STATE. SQLCODE=-514, SQLSTATE=26501, DRIVER=4.22.29

而且我不知道如何解决它或为什么会这样。我试着研究这个,有人建议这样做: SET CURRENT APPLICATION COMPATIBILITY = 'V11R1' 但是这也没有运气,即使它 运行.

同样的错误

我还尝试用 SELECT GETVARIABLE('SYSIBM.VERSION') FROM SYSIBM.SYSDUMMY1 和这个 returns DSN12015 查看我的 DB2 版本(不知道这是什么意思)。

我正在拼命寻找答案或一些帮助,非常感谢。目标是让结果看起来像:

ID    |Grouped_Classes     |
-----------------------------
3      A51, B51, K5B, M5A
4      XN5
5      XN5, A51
9      BX1, BX2, AK3

试试这个:

/*
WITH STUDENTS (ID, Classes, Priority) AS 
(
          SELECT 3, 'A51', 1 FROM SYSIBM.SYSDUMMY1
UNION ALL SELECT 3, 'M5A', 2 FROM SYSIBM.SYSDUMMY1
UNION ALL SELECT 4, 'XN5', 1 FROM SYSIBM.SYSDUMMY1
UNION ALL SELECT 5, 'XN5', 1 FROM SYSIBM.SYSDUMMY1
UNION ALL SELECT 3, 'B51', 2 FROM SYSIBM.SYSDUMMY1
UNION ALL SELECT 3, 'K5B', 2 FROM SYSIBM.SYSDUMMY1
UNION ALL SELECT 5, 'A51', 2 FROM SYSIBM.SYSDUMMY1
UNION ALL SELECT 9, 'BX1', 1 FROM SYSIBM.SYSDUMMY1
UNION ALL SELECT 9, 'BX2', 2 FROM SYSIBM.SYSDUMMY1
UNION ALL SELECT 9, 'AK3', 2 FROM SYSIBM.SYSDUMMY1
)
*/
SELECT 
  ID
, SUBSTR (XMLSERIALIZE (XMLAGG (XMLTEXT (',' || CLASSES) ORDER BY PRIORITY) AS CLOB (100)), 2)
  AS GROUPED_CLASSES
FROM STUDENTS
GROUP BY ID
ID GROUPED_CLASSES
3 A51,K5B,M5A,B51
4 XN5
5 XN5,A51
9 BX1,BX2,AK3