oracle plsql:如何解析 XML 并插入到表中
如何将嵌套的 xml 文件加载到数据库表中?
How to load a nested xml file into database table ?
<?xml version="1.0" ?>
<person>
<row>
<name>Tom</name>
<Address>
<State>California</State>
<City>Los angeles</City>
</Address>
</row>
<row>
<name>Jim</name>
<Address>
<State>California</State>
<City>Los angeles</City>
</Address>
</row>
</person>
在这个xml中，person是表名，name是归档名，Tom是它的归档值.地址是一个子表，州和城市是地址内的两列.我想将 person 行插入到 person 表中，如果失败，不要插入到 address 表中.这个 xml 可能非常大.这样做的最佳解决方案是什么?
In this xml, person is the table name , name is the filed name, Tom is its filed value. Address is a subtable and state and city is two column inside Address. I want to insert the person row into person table, if it failed , do not insert into address table. This xml could be very big. What's the best solution to do this ?
推荐答案
您可以将 XML 文档加载到 XMLType 中，然后对其进行查询，例如:
You can load an XML document into an XMLType, then query it, e.g.:
DECLARE
x XMLType := XMLType(
'<?xml version="1.0" ?>
<person>
<row>
<name>Tom</name>
<Address>
<State>California</State>
<City>Los angeles</City>
</Address>
</row>
<row>
<name>Jim</name>
<Address>
<State>California</State>
<City>Los angeles</City>
</Address>
</row>
</person>');
BEGIN
FOR r IN (
SELECT ExtractValue(Value(p),'/row/name/text()') as name
,ExtractValue(Value(p),'/row/Address/State/text()') as state
,ExtractValue(Value(p),'/row/Address/City/text()') as city
FROM TABLE(XMLSequence(Extract(x,'/person/row'))) p
) LOOP
-- do whatever you want with r.name, r.state, r.city
END LOOP;
END;
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