xml到oracle DB表:遇到问题 [英] xml to oracle DB table : encountering problems

问题描述

我有一个使用Editplus(在Windows中)创建的示例xml文件.

I have a sample xml file created using Editplus( in windows).

  < ?xml version="1.0" encoding="UTF-8" ?>
  < badges >
    < row UserId="3714" Name="Teacher" Date="2008-09-15T08:55:03.923"/>
    < row UserId="994" Name="Teacher" Date="2008-09-15T08:55:03.957"/>
  < / badges>

我在这里的目标是将这些信息获取到Oracle DB表中.如此处建议 https://stackoverflow.com/questions/998055?sort=newest#sort-top，我尝试执行sql命令.但是不能成功，

My goal here is to get this information into Oracle DB table. As suggested here https://stackoverflow.com/questions/998055?sort=newest#sort-top, I tried to execute the sql commands. But couldn't succeed,

========================= sql查询1 ==================== =========

========================= sql query 1 ============================

SQL> SELECT XMLTYPE(bfilename('D', 'tmp.xml'), nls_charset_id('UTF8')) xml_data FROM dual;

  XML_DATA
  ------------------------------------------------------------
  <?xml version="1.0" encoding="WINDOWS-1252"?>
  <badges>
     <row UserId="3714" Name

在输出中，我看到xml文件的一半被截断了.并且输出中的编码类型被视为WINDOWS-1252.有人可以解释为什么会这样吗?

In the output, I see half of the xml file got truncated. And the encoding type in output is seen as WINDOWS-1252. Could someone explain why is it happening so?

================================================ =========================

==========================================================================

=============================== sql查询2 ============== ==================

=============================== sql query 2 ===============================

SQL> SELECT UserId, Name, to_timestamp(dt, 'YYYY-MM-DD"T"HH24:MI:SS.FF3') dt

  2        FROM (SELECT XMLTYPE(bfilename('D', 'tmp.xml'), 
  3                             nls_charset_id('WINDOWS-1252')) xml_data
  4                FROM dual),
  5             XMLTable('for $i in /badges/row
  6                                  return $i'
  7                      passing xml_data
  8                      columns UserId NUMBER path '@UserId',
  9                              Name VARCHAR2(50) path '@Name',
 10                              dt VARCHAR2(25) path '@Date');

================================================ ====================== 相同的查询在这里工作 https://stackoverflow.com/questions/998055?sort=newest#sort-顶部.但是对我来说却不是. 我的机器上安装了oracle 10g. 有人可以建议更正以使查询正常工作.

===================================================================== The same query was working here https://stackoverflow.com/questions/998055?sort=newest#sort-top. But for me it doesn't. I have oracle 10g installed on my machine. Could someone suggest the corrections to make the queries work.

谢谢.

推荐答案

考虑到您的第一点，您的输出仅在显示时被截断.您可以使用SET LONG更改SQL * Plus中显示的字节数:

Considering your first point, your output is only truncated on display. You can change how many bytes are displayed in SQL*Plus with SET LONG:

SQL> SELECT XMLTYPE(bfilename('D', 'test.xml'), 
  2         nls_charset_id('WINDOWS-1252')) xml_data FROM dual;

XML_DATA
--------------------------------------------------------------------------------
<?xml version="1.0" encoding="UTF-8"?>
<badges>
  <row UserId="3714" Name=

SQL> SET LONG 4000
SQL> /

XML_DATA
--------------------------------------------------------------------------------
<?xml version="1.0" encoding="UTF-8"?>
<badges>
  <row UserId="3714" Name="Teacher" Date="2008-09-15T08:55:03.923"/>
  <row UserId="994" Name="Teacher" Date="2008-09-15T08:55:03.957"/>
</badges>

您已经注意到，您的字符集将根据您的NLS会话参数进行修改(即，文件将转换为客户端的字符集).

As you have noticed, your character set will be modified per your NLS session parameters (i-e: the file will be translated to the character set of your client).

第二点:

• 您正在使用哪个版本的SQL * Plus?它可能比数据库旧，并且无法识别合成句
• 您能否发布在SQL * Plus中键入的确切查询(请使用SO的CODE功能)

因为我无法使用Oracle 10.2.0.3复制:

because I can not reproduce with Oracle 10.2.0.3:

SQL> SELECT UserId, NAME, to_timestamp(dt, 'YYYY-MM-DD"T"HH24:MI:SS.FF3') dt
  2    FROM (SELECT XMLTYPE(bfilename('D', 'test.xml'),
  3                 nls_charset_id('WINDOWS-1252')) xml_data FROM dual),
  4         XMLTable('for $i in /badges/row
  5                             return $i'
  6                   passing xml_data columns UserId NUMBER path '@UserId',
  7                   NAME VARCHAR2(50) path '@Name',
  8                   dt VARCHAR2(25) path '@Date');

    USERID NAME      DT
---------- --------- ----------------------------
      3714 Teacher   15/09/08 08:55:03,923000000
       994 Teacher   15/09/08 08:55:03,957000000

更新:此XMLTable synthax必须是10gR2(10.2.*)的新功能(需要确认)

Update: This XMLTable synthax must be a new feature of the 10gR2 (10.2.*) (needs confirmation)

但是，您可以使用另一种访问XML数据的方法(在

You can however use another method of accessing XML Data(described in another SO):

SQL> SELECT extractvalue(column_value, '/row/@UserId') "userID",
  2         extractvalue(column_value, '/row/@Name') "Name",
  3         extractvalue(column_value, '/row/@Date') "Date"
  4    FROM TABLE(XMLSequence(XMLTYPE(bfilename('D', 'tmp.xml'),
  5                     nls_charset_id('WINDOWS-1252')).extract('/badges/row'))) t;

userID  Name      Date
------- --------- ------------------------
3718    Teacher   2008-09-15T08:55:03.923
994     Teacher   2008-09-15T08:55:03.957

这篇关于xml到oracle DB表:遇到问题的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！