ORACLE插入sql插入null但应该是日期

Question

我有一个简单的问题。我有一条sql，它应该使用子选择插入值，但其中一个插入null，但这是错误的。如果仅运行 subselect，则 sql 返回正确的日期。知道出了什么问题吗？谢谢你的建议。

列 dt01_dt 和子查询 (select (indi.dt02_dt) from h_indivparam indi, t_intervenants i where indi.refindividu = '&i' and indi.str1 = 'DCD' and i.refindividu = indi.refindividu and i.reftype ='DB'和 i.refdoss = '&d')

INSERT
  INTO g_piece (refdoss,
       refpiece,
       typpiece,
       gpidate1_dt,
       createur,
       DT01_01,
       mt01,
       mt02,
       mt03,
       mt04,
       mt05,
       nb01,
       nb02,
       nb03,
       nb04)
SELECT '&d',
       '&N',
       'INHERITANCE PROCEEDING CU',
       SYSDATE,
       'SE',
       (SELECT (indi.dt02_dt)
         FROM h_indivparam indi,
              t_intervenants i
        WHERE indi.refindividu = '&i'
              AND indi.str1 = 'DCD'
              AND i.refindividu = indi.refindividu
              AND i.reftype ='DB'
              AND i.refdoss = '&d'),
       (SELECT dos.TOTAL_DUE_AMT
         FROM csob_buf_doss dos,
              g_dossier d
        WHERE d.refdoss = '&d'
              AND dos.ancrefdoss = d.ancrefdoss
              AND dos.current_variant IN ('1','15','2','25',
                                          '3','35','357','37',
                                          '4','45','6','57',
                                          '47','157','56','456',
                                          '457','17','4567')),
       (SELECT dos.DUE_PRIN_AMT
         FROM csob_buf_doss dos,
              g_dossier d
        WHERE d.refdoss = '&d'
              AND dos.ancrefdoss = d.ancrefdoss
              AND dos.current_variant IN ('1','15','2','25',
                                          '3','35','357','37',
                                          '4','45','6','57',
                                          '47','157','56','456',
                                          '457','17','4567')),
       (SELECT dos.DUE_INTER_AMT
         FROM csob_buf_doss dos,
              g_dossier d
        WHERE d.refdoss = '&d'
              AND dos.ancrefdoss = d.ancrefdoss
              AND dos.current_variant IN ('1','15','2','25',
                                          '3','35','357','37',
                                          '4','45','6','57',
                                          '47','157','56','456',
                                          '457','17','4567')),
       (SELECT dos.LATE_CHARGES_AMT
         FROM csob_buf_doss dos,
              g_dossier d
        WHERE d.refdoss = '&d'
              AND dos.ancrefdoss = d.ancrefdoss
              AND dos.current_variant IN ('1','15','2','25',
                                          '3','35','357','37',
                                          '4','45','6','57',
                                          '47','157','56','456',
                                          '457','17','4567')),
       (SELECT dos.DUE_FEES_AMT
         FROM csob_buf_doss dos,
              g_dossier d
        WHERE d.refdoss = '&d'
              AND dos.ancrefdoss = d.ancrefdoss
              AND dos.current_variant IN ('1','15','2','25',
                                          '3','35','357','37',
                                          '4','45','6','57',
                                          '47','157','56','456',
                                          '457','17','4567')),
       (SELECT dos.CURRENT_VARIANT
         FROM csob_buf_doss dos,
              g_dossier d
        WHERE d.refdoss = '&d'
              AND dos.ancrefdoss = d.ancrefdoss
              AND dos.current_variant IN ('1','15','2','25',
                                          '3','35','357','37',
                                          '4','45','6','57',
                                          '47','157','56','456',
                                          '457','17','4567')),
       (SELECT dos.NEW_LOAN_INSURANCE
         FROM csob_buf_doss dos,
              g_dossier d
        WHERE d.refdoss = '&d'
              AND dos.ancrefdoss = d.ancrefdoss
              AND dos.current_variant IN ('1','15','2','25',
                                          '3','35','357','37',
                                          '4','45','6','57',
                                          '47','157','56','456',
                                          '457','17','4567')),
       (SELECT COUNT(*)
         FROM t_intervenants
        WHERE refdoss = '&d'
              AND reftype LIKE 'CE%'),
       (SELECT COUNT(*)
         FROM t_intervenants
        WHERE refdoss = '&d'
              AND reftype LIKE 'CA%')
  FROM dual

如何获得正确结果的建议

Answer 1

您在

SELECT

中使用的

INSERT

查询可以简化为：

SELECT '&d',
       '&N',
       'INHERITANCE PROCEEDING CU',
       SYSDATE,
       'SE',
       ( SELECT indi.dt02_dt
         FROM   h_indivparam indi
                INNER JOIN t_intervenants i
                ON i.refindividu = indi.refindividu
          WHERE indi.refindividu = '&i'
          AND   indi.str1 = 'DCD'
          AND   i.reftype ='DB'
          AND   i.refdoss = '&d'
       ),
       dos.TOTAL_DUE_AMT,
       dos.DUE_PRIN_AMT,
       dos.DUE_INTER_AMT,
       dos.LATE_CHARGES_AMT,
       dos.DUE_FEES_AMT,
       dos.CURRENT_VARIANT,
       dos.NEW_LOAN_INSURANCE,
       ti.cnt,
       ti.cnt
FROM   DUAL
       LEFT OUTER JOIN (
         csob_buf_doss dos
         INNER JOIN g_dossier d
         ON (   d.refdoss = '&d'
            AND dos.ancrefdoss = d.ancrefdoss
            AND dos.current_variant IN ('1','15','2','25',
                                        '3','35','357','37',
                                        '4','45','6','57',
                                        '47','157','56','456',
                                        '457','17','4567')
            )
       ) ON (1 = 1)
       CROSS JOIN (
         SELECT COUNT(*) AS cnt
         FROM   t_intervenants
         WHERE  refdoss = '&d'
         AND    reftype LIKE 'CE%'
       ) ti

注意：未经测试，因为我们没有您的桌子。

如果内部

SELECT

子查询匹配零行，那么它将引发

NO_DATA_FOUND

异常，外部查询将其解释为

NULL

。匹配零行的实际原因可能是您的表不包含任何匹配数据，也可能是替换变量无效、为空或其他不正确，并且“正确”行被过滤掉。

但是，我们无法告诉您输出

NULL

的哪些可能原因是实际原因，因为我们无权访问：

1. 您的桌子；
2. 表格中的数据；或
3. 您正在使用的替代变量的值。

您需要自己调试问题的其余部分，或者提供一个最小代表性示例，以便我们复制该问题。