sql - ORA-01446 - 无法从带有 DISTINCT、GROUP BY 等的 View 中选择 ROWID

Question

我创建了一个在 select 子句中有一个不同的 View 。

当我尝试使用“select * from view”选择所有记录时，出现以下错误:

ORA-01446: cannot select ROWID from view with DISTINCT, GROUP BY, etc.

我正在寻找为什么会发生这种情况并得出以下结论:

You tried to create a view that included a ROWID in the SELECT statement as well as a clause such as DISTINCT or GROUP BY. This is not allowed. Reference

这很尴尬，因为 View 中的 select 语句没有选择 rowid 并且它没有用于任何其他子句(where、order 等)。

对此有什么想法吗？

更新

我无法发布查询本身，但我发布了一个类似的内容。这里是:

SELECT DISTINCT t1.c1 TABLE1_C1,
t1.c2 TABLE1_C2,
t1.c3 TABLE1_C3,
t1.c4 TABLE1_C4,
t1.c4 TABLE1_C4,
t1.c5 TABLE1_C5,
t1.c6 TABLE1_C6,
t1.c7 TABLE1_C7,
t1.c8 TABLE1_C8,
t2.c1 TABLE2_C1,
t2.c2 TABLE2_C2,
t2.c3 TABLE2_C3,
t2.c4 TABLE2_C4,
t2.c5 TABLE2_C5,
t3.c1 TABLE3_C1,
t2.c6 TABLE2_C6,
t4.c1 TABLE4_C1,
t4.c2 TABLE4_C2,
t4.c3 TABLE4_C3
  FROM table1 t1
  LEFT JOIN table2 t2
  ON t1.c1 = t2.c7
  left JOIN table4 t4
  ON t4.c4 = t2.c1
  LEFT JOIN table3 t3
  ON (t2.c1 = t3.c2
  AND t2.c8 = t3.c3
  AND t2.c9 = t3.c4)
  WHERE (t2.cp5  = 0 or t2.cp5 is null)
  AND (t2.c3  =
    (SELECT MAX(c3)
    FROM table2 s_t2
    WHERE s_t2.c3 LIKE t2.c3
    AND s_t2.c7 = t1.c1
    ) or t2.c3 is null)

Answer 1

如果您使用 distinct 或 group by 几行可以限定条件。因此，不同的执行会返回不同的行 ID，另一个问题是，如果多行符合条件，您会返回哪一个？

这根本没有意义