确定哪些行导致查询错误

Question

我有一个 Oracle 18c table，它有 15,000 行。作为测试，我正在尝试运行以下查询：

select
    --works for all rows:
    --sdo_util.to_wkbgeometry(sdo_geometry(replace(sde.st_astext(shape),'LINESTRING M','LINESTRING')))
    
    --doesn't work for all rows (the problem is caused by: SDO_UTIL.FROM_WKBGEOMETRY() ):
    sdo_util.from_wkbgeometry(sdo_util.to_wkbgeometry(sdo_geometry(replace(sde.st_astext(shape),'LINESTRING M','LINESTRING'))))
from
    my_table;

当我运行在 SQL Developer 中查询时，它最初运行没有错误，但那是因为它只选择了前 50 行。

如果我尝试运行查询所有行（通过 CTRL+END），则会抛出错误：

ORA-29532: Java call terminated by uncaught Java exception: java.lang.RuntimeException: oracle.spatial.util.GeometryExceptionWithContext: Byte order can only be either BIG_ENDIAN (encoded as 0) or LITTLE_ENDIAN (encoded as 1). Found encoding 65
ORA-06512: at "MDSYS.SDO_JAVA_STP", line 68
ORA-06512: at "MDSYS.SDO_UTIL", line 6244
29532. 00000 -  "Java call terminated by uncaught Java exception: %s"
*Cause:    A Java exception or error was signaled and could not be
           resolved by the Java code.
*Action:   Modify Java code, if this behavior is not intended.

如何确定导致该错误的特定行？

我尝试使用 SDO_UTIL.VALIDATE_WKBGEOMETRY() 来查找问题 blob。但是，令人惊讶的是，它没有 return 任何 FALSE 值。

Answer 1

尝试循环执行（row-by-row，这将是 slow-by-slow，但是 - 如果您没有更好的东西，请耐心等待 - 15.000 行并没有那么多.. .).阅读代码中的注释。

declare
  l_geom sdo_geometry;  --> I'm not sure what datatype is result of all those
                        --  geometry functions' call; I guess it is SDO_GEOMETRY.
                        --  If not, use appropriate datatype.
begin
  for cur_r in 
    (select
       id,     --> I guess there must be some kind of an ID; if not, pick any other 
               --  column which will uniquely identify that particular row
       shape
     from my_table
    ) 
  loop
    -- inner BEGIN-EXCEPTION-END block which will "capture" error on that row,
    -- but will also let the loop continue until the last row fetched by the cursor
    begin
      l_geom := sdo_util.from_wkbgeometry(sdo_util.to_wkbgeometry(sdo_geometry(replace(sde.st_astext(cur_r.shape),'LINESTRING M','LINESTRING'))));
    exception
      when others then
        dbms_output.put_line('Error on ID = ' || cur_r.id ||': '|| sqlerrm);
    end;
  end loop;
end;
/

Answer 2

创建一个函数来包装导致问题的调用并捕获函数中的异常：

CREATE FUNCTION test_from_wkbgeometry(
  v_data IN BLOB
) RETURN NUMBER
IS
  temp SDO_GEOMETRY;
BEGIN
  temp := sdo_util.from_wkbgeometry(v_data);
  RETURN 1;
EXCEPTION
  WHEN OTHERS THEN
    RETURN 0;
END;
/

然后在您的查询中使用它：

SELECT *
FROM   my_table
WHERE  test_from_wkbgeometry(
         sdo_util.to_wkbgeometry(
           sdo_geometry(replace(sde.st_astext(shape),'LINESTRING M','LINESTRING'))
         )
       ) = 0;

在以后的Oracle版本中，您可以在查询中定义函数：

WITH FUNCTION test_from_wkbgeometry(
  v_data IN BLOB
) RETURN NUMBER
IS
  temp SDO_GEOMETRY;
BEGIN
  temp := sdo_util.from_wkbgeometry(v_data);
  RETURN 1;
EXCEPTION
  WHEN OTHERS THEN
    RETURN 0;
END;
SELECT *
FROM   my_table
WHERE  test_from_wkbgeometry(
         sdo_util.to_wkbgeometry(
           sdo_geometry(replace(sde.st_astext(shape),'LINESTRING M','LINESTRING'))
         )
       ) = 0;

Answer 3

使用@MTO 和@LittleFoot 提供的解决方案，我能够确定以下内容：

问题似乎发生在 WKB 几何体为 3d — 和 — multi-part 时。 to_wkbgeometry() 函数无法将 3d multi-part WKB 转换为 SDO_GEOMETRY。我认为这可能是 Oracle 错误。

这里有更多信息：Convert 3d multi-part WKB to SDO_GEOMETRY

测试：

作品： 3d，single-part：

select
  --Works: 3d, single-part
  sdo_util.from_wkbgeometry(sdo_util.to_wkbgeometry(sdo_geometry('LINESTRING (1 2 3, 4 5 6)')))
from
  dual

作品： 2d，multi-part：

select
  --Works: 2d, multi-part
  sdo_util.to_wkbgeometry(sdo_geometry('MULTILINESTRING ((1 2, 4 5),(7 8, 0 1))'))
from
  dual

无效： 3d，multi-part：

select
  --Doesn't work: 3d, multi-part
  sdo_util.from_wkbgeometry(sdo_util.to_wkbgeometry(sdo_geometry('MULTILINESTRING ((1 2 3, 4 5 6),(7 8 9, 0 1 3))')))
from
  dual

错误：

ORA-29532: Java call terminated by uncaught Java exception: java.lang.RuntimeException: oracle.spatial.util.GeometryExceptionWithContext: Byte order can only be either BIG_ENDIAN (encoded as 0) or LITTLE_ENDIAN (encoded as 1). Found encoding 64
ORA-06512: at "MDSYS.SDO_JAVA_STP", line 68
ORA-06512: at "MDSYS.SDO_UTIL", line 6244
29532. 00000 - "Java call terminated by uncaught Java exception: %s"
*Cause:  A Java exception or error was signaled and could not be
      resolved by the Java code.
*Action:  Modify Java code, if this behavior is not intended.

确定哪些行导致查询错误

Determine what rows are causing error in query

sql

oracle

oracle18c

oracle-spatial