I'm new in Oracle and I've - maybe trivial - a problem in a select. (I'm using Oracle 10g Express Edition).
我是甲骨文的新手,而且我 - 也许是微不足道的 - 选择中的一个问题。 (我正在使用Oracle 10g Express Edition)。
I've a DB with a field CLOB: mytab.xml This column have an XML like this:
我有一个带字段CLOB的数据库:mytab.xml这个列有一个像这样的XML:
<?xml version="1.0" encoding="iso-8859-1"?>
<info>
<id> 954 </id>
<idboss> 954 </idboss>
<name> Fausto </name>
<sorname> Anonimo </sorname>
<phone> 040000000 </phone>
<fax> 040000001 </fax>
</info>
I'm trying to do a 'simple' select to get, for example, the value of 'fax' tag. But I've a bit of problem and I'm not able to understand my error. For example:
我正在尝试进行“简单”选择,例如,获取'fax'标签的值。但我有点问题,我无法理解我的错误。例如:
select extract(xml, '//fax').getStringVal() from mytab;
ORA-00932: inconsistent datatypes: expected - got
select extract(xmltype(xml), '//fax').getStringVal() from mytab;
ORA-06502: PL/SQL: numeric or value error
ORA-06512: at "SYS.XMLTYPE", line 254
I've tryed also with 'extractvalue', but I've the same problems. where I'm wrong to do this?
我也试过'extractvalue',但我遇到了同样的问题。我做错了哪里?
6 个解决方案
#1
27
Try this instead:
试试这个:
select xmltype(t.xml).extract('//fax/text()').getStringVal() from mytab t
#2
3
Try using xmltype.createxml(xml)
.
尝试使用xmltype.createxml(xml)。
As in,
如,
select extract(xmltype.createxml(xml), '//fax').getStringVal() from mytab;
It worked for me.
它对我有用。
If you want to improve or manipulate even further.
如果你想进一步改进或操纵。
Try something like this.
尝试这样的事情。
Select *
from xmltable(xmlnamespaces('some-name-space' as "ns",
'another-name-space' as "ns1",
),
'/ns/ns1/foo/bar'
passing xmltype.createxml(xml)
columns id varchar2(10) path '//ns//ns1/id',
idboss varchar2(500) path '//ns0//ns1/idboss',
etc....
) nice_xml_table
Hope it helps someone.
希望它可以帮到某人。
#3
0
this query runs perfectly in my case
在我的情况下,此查询运行完美
select xmltype(t.axi_content).extract('//Lexis-NexisFlag/text()').getStringVal() from ax_bib_entity t
#4
0
You can achieve with below queries
您可以使用以下查询来实现
-
select extract(xmltype(xml), '//fax/text()').getStringVal() from mytab;
从mytab中选择extract(xmltype(xml),'// fax / text()')。getStringVal();
-
select extractvalue(xmltype(xml), '//fax') from mytab;
从mytab中选择extractvalue(xmltype(xml),'// fax');
#5
0
You can try creating DBMS_XMLPARSER.parser object from the CLOB XML and get a DBMS_XMLDOM.DOMDocument object from it. Then use DBMS_XMLDOM package methods to get the value of any node.
您可以尝试从CLOB XML创建DBMS_XMLPARSER.parser对象,并从中获取DBMS_XMLDOM.DOMDocument对象。然后使用DBMS_XMLDOM包方法获取任何节点的值。
xml_ CLOB := 'X';
p DBMS_XMLPARSER.parser;
doc_ DBMS_XMLDOM.DOMDocument;
-- Convert the CLOB into a XML-document
P := DBMS_XMLPARSER.newparser();
-- Parse the clob and get the XML-document
DBMS_XMLPARSER.parseclob(p, xml_);
doc_ := DBMS_XMLPARSER.getDocument(p);
Then use the below methods to extract node value
然后使用以下方法提取节点值
DBMS_XMLDOM.getElementsByTagName(doc_, 'NodeName'); DBMS_XMLDOM.GetNodeValue(node_obj_);
DBMS_XMLDOM.getElementsByTagName(doc_,'NodeName'); DBMS_XMLDOM.GetNodeValue(node_obj_);
Refer more about DBMS_XMLDOM methods here.
请在此处详细了解DBMS_XMLDOM方法。
#6
0
In case of :
的情况下 :
<?xml version="1.0" encoding="iso-8859-1"?>
<info xmlns="http://namespaces.default" xmlns:ns2="http://namespaces.ns2" >
<id> 954 </id>
<idboss> 954 </idboss>
<name> Fausto </name>
<sorname> Anonimo </sorname>
<phone> 040000000 </phone>
<fax> 040000001 </fax>
</info>
Query :
查询:
Select *
from xmltable(xmlnamespaces(default 'http://namespaces.default'
'http://namespaces.ns2' as "ns",
),
'/info'
passing xmltype.createxml(xml)
columns id varchar2(10) path '/id',
idboss varchar2(500) path '/idboss',
etc....
) nice_xml_table
#1
27
Try this instead:
试试这个:
select xmltype(t.xml).extract('//fax/text()').getStringVal() from mytab t
#2
3
Try using xmltype.createxml(xml)
.
尝试使用xmltype.createxml(xml)。
As in,
如,
select extract(xmltype.createxml(xml), '//fax').getStringVal() from mytab;
It worked for me.
它对我有用。
If you want to improve or manipulate even further.
如果你想进一步改进或操纵。
Try something like this.
尝试这样的事情。
Select *
from xmltable(xmlnamespaces('some-name-space' as "ns",
'another-name-space' as "ns1",
),
'/ns/ns1/foo/bar'
passing xmltype.createxml(xml)
columns id varchar2(10) path '//ns//ns1/id',
idboss varchar2(500) path '//ns0//ns1/idboss',
etc....
) nice_xml_table
Hope it helps someone.
希望它可以帮到某人。
#3
0
this query runs perfectly in my case
在我的情况下,此查询运行完美
select xmltype(t.axi_content).extract('//Lexis-NexisFlag/text()').getStringVal() from ax_bib_entity t
#4
0
You can achieve with below queries
您可以使用以下查询来实现
-
select extract(xmltype(xml), '//fax/text()').getStringVal() from mytab;
从mytab中选择extract(xmltype(xml),'// fax / text()')。getStringVal();
-
select extractvalue(xmltype(xml), '//fax') from mytab;
从mytab中选择extractvalue(xmltype(xml),'// fax');
#5
0
You can try creating DBMS_XMLPARSER.parser object from the CLOB XML and get a DBMS_XMLDOM.DOMDocument object from it. Then use DBMS_XMLDOM package methods to get the value of any node.
您可以尝试从CLOB XML创建DBMS_XMLPARSER.parser对象,并从中获取DBMS_XMLDOM.DOMDocument对象。然后使用DBMS_XMLDOM包方法获取任何节点的值。
xml_ CLOB := 'X';
p DBMS_XMLPARSER.parser;
doc_ DBMS_XMLDOM.DOMDocument;
-- Convert the CLOB into a XML-document
P := DBMS_XMLPARSER.newparser();
-- Parse the clob and get the XML-document
DBMS_XMLPARSER.parseclob(p, xml_);
doc_ := DBMS_XMLPARSER.getDocument(p);
Then use the below methods to extract node value
然后使用以下方法提取节点值
DBMS_XMLDOM.getElementsByTagName(doc_, 'NodeName'); DBMS_XMLDOM.GetNodeValue(node_obj_);
DBMS_XMLDOM.getElementsByTagName(doc_,'NodeName'); DBMS_XMLDOM.GetNodeValue(node_obj_);
Refer more about DBMS_XMLDOM methods here.
请在此处详细了解DBMS_XMLDOM方法。
#6
0
In case of :
的情况下 :
<?xml version="1.0" encoding="iso-8859-1"?>
<info xmlns="http://namespaces.default" xmlns:ns2="http://namespaces.ns2" >
<id> 954 </id>
<idboss> 954 </idboss>
<name> Fausto </name>
<sorname> Anonimo </sorname>
<phone> 040000000 </phone>
<fax> 040000001 </fax>
</info>
Query :
查询:
Select *
from xmltable(xmlnamespaces(default 'http://namespaces.default'
'http://namespaces.ns2' as "ns",
),
'/info'
passing xmltype.createxml(xml)
columns id varchar2(10) path '/id',
idboss varchar2(500) path '/idboss',
etc....
) nice_xml_table