Question

我需要在文件管理器上运行一个插入，但我的选择是返回文件夹的重复项，所以我试图做一个组，但我得到了：

ORA-02287：此处不允许的序列号

有没有办法解决这个问题或使我的选择语句更有效率？

INSERT INTO AMANDA.FOLDERFREEFORM(FREEFORMRSN, FREEFORMCODE, FOLDERRSN, C01, N01, N02, C02, C03, C04, D01, D02, D03, C05, C06)
SELECT AMANDA.FOLDERFREEFORMSEQ.NEXTVAL, 15030, F.FOLDERRSN, R.CATEGORY, R.REQUIRED, R.ELECTIVE, S.SCHOOL_NAME, C.CLASS_NAME, R.USED_FOR, R.DATE_USED, R.COURSE_DATE, RO.DATE_ROSTER_RECVD, R.CE_USED, I.INSTRUCTOR_NAME
FROM OREC_ROSTER_DTLS R
INNER JOIN AMANDA.FOLDER F ON F.CONVERSIONRSN = R.IND_SEQ_ID
INNER JOIN OREC_SCHOOLS S ON R.SCHOOL_NUMBER = S.SCHOOL_NUMBER
INNER JOIN OREC_COURSES C ON C.SCHOOL_NUMBER = S.SCHOOL_NUMBER
INNER JOIN OREC_ROSTERS RO ON R.ROSTER_NBR = RO.ROSTER_NBR
INNER JOIN OREC_INSTRUCTORS IS ON R.COURSE_INSTRUCTOR_NUMBER = IS.INSTRUCTOR_NUMBER
WHERE F.FOLDERTYPE = 'REAB'
Group by f.folderrsn;

Answer 1

这是您的select查询，没有序列：

SELECT 15030, F.FOLDERRSN, R.CATEGORY, R.REQUIRED, R.ELECTIVE,
       S.SCHOOL_NAME, C.CLASS_NAME, R.USED_FOR, R.DATE_USED, R.COURSE_DATE, 
       RO.DATE_ROSTER_RECVD, R.CE_USED, I.INSTRUCTOR_NAME
FROM OREC_ROSTER_DTLS R
INNER JOIN AMANDA.FOLDER F ON F.CONVERSIONRSN = R.IND_SEQ_ID
INNER JOIN OREC_SCHOOLS S ON R.SCHOOL_NUMBER = S.SCHOOL_NUMBER
INNER JOIN OREC_COURSES C ON C.SCHOOL_NUMBER = S.SCHOOL_NUMBER
INNER JOIN OREC_ROSTERS RO ON R.ROSTER_NBR = RO.ROSTER_NBR
INNER JOIN OREC_INSTRUCTORS IS ON R.COURSE_INSTRUCTOR_NUMBER = IS.INSTRUCTOR_NUMBER
WHERE F.FOLDERTYPE = 'REAB'
Group by f.folderrsn;

这是不正确的，因为group by只有一列，但select有很多其他列。我不知道group by的意图是什么。但是，如果您有一个有效的查询，则可以使用子查询添加序列：

select AMANDA.FOLDERFREEFORMSEQ.NEXTVAL, t.*
from (select . . .
      from . . .
      group by . . .
     ) t

使用group by和序列

1 个答案: