提取數據

Question

我需要從表FND_SOA_BODY_PIECE和柱體提取BATCH_ID的數據（數據類型：CLOB），其中有

<?xml version="1.0" encoding="UTF-8"?>   
     <SOAP-ENV:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/" xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"> 
     <SOAP-ENV:Header> 
     </SOAP-ENV:Header> 
     <SOAP-ENV:Body> 
      <tns1:InputParameters xmlns:tns1="http://xmlns.oracle.com/apps/gl/soaprovider/plsql/geas_gl_journal_pkg/geas_get_gl_data/"> 
        <tns1:P_BATCH_TBL> 
         <tns1:P_BATCH_TBL_ITEM> 
           <tns1:BATCH_ID>85380</tns1:BATCH_ID> 
         </tns1:P_BATCH_TBL_ITEM> 
         <tns1:P_BATCH_TBL_ITEM> 
           <tns1:BATCH_ID>85345</tns1:BATCH_ID> 
         </tns1:P_BATCH_TBL_ITEM> 
         <tns1:P_BATCH_TBL_ITEM> 
           <tns1:BATCH_ID>85364</tns1:BATCH_ID> 
         </tns1:P_BATCH_TBL_ITEM> 
         <tns1:P_BATCH_TBL_ITEM> 
           <tns1:BATCH_ID>85356</tns1:BATCH_ID> 
         </tns1:P_BATCH_TBL_ITEM> 
         <tns1:P_BATCH_TBL_ITEM> 
           <tns1:BATCH_ID>85374</tns1:BATCH_ID> 
         </tns1:P_BATCH_TBL_ITEM> 
         <tns1:P_BATCH_TBL_ITEM> 
           <tns1:BATCH_ID>85358</tns1:BATCH_ID> 
         </tns1:P_BATCH_TBL_ITEM> 
        </tns1:P_BATCH_TBL> 
      </tns1:InputParameters> 
     </SOAP-ENV:Body> 
    </SOAP-ENV:Envelope> 

XML數據我想這之下，但它只給我空值

在這一個

SELECT xmltype(fsa.body).EXTRACT('/Envelope/Body/InputParameters/P_BATCH_TBL/P_BATCH_TBL_ITEM/BATCH_ID').getStringVal() FROM fnd_soa_body_piece; 

莫非

別人的幫助？

Answer 1

首先，請張貼有效的XML，因爲您顯示的內容看起來像是從瀏覽器中刮取的屏幕，並且缺少結尾標記並且具有無效字符。如果您的xml具有名稱空間引用，那麼您需要將它們包含在XPath中，並作爲extract（）函數的參數。這裏有一個例子：

with fnd_soa_body_piece as (
select xmltype(
     '<SOAP-ENV:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
      xmlns:xsd="http://www.w3.org/2001/XMLSchema" 
      xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/" 
      xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"> 
     <SOAP-ENV:Header> 
     <SOAP-ENV:Body> 
      <tns1:InputParameters xmlns:tns1="http://xmlns.oracle.com/apps/gl/soaprovider/plsql/geas_gl_journal_pkg/geas_get_gl_data/"> 
        <tns1:P_BATCH_TBL> 
         <tns1:P_BATCH_TBL_ITEM> 
           <tns1:BATCH_ID>85380</tns1:BATCH_ID> 
         </tns1:P_BATCH_TBL_ITEM> 
         <tns1:P_BATCH_TBL_ITEM> 
           <tns1:BATCH_ID>85345</tns1:BATCH_ID> 
         </tns1:P_BATCH_TBL_ITEM> 
         <tns1:P_BATCH_TBL_ITEM> 
           <tns1:BATCH_ID>85364</tns1:BATCH_ID> 
         </tns1:P_BATCH_TBL_ITEM> 
         <tns1:P_BATCH_TBL_ITEM> 
           <tns1:BATCH_ID>85356</tns1:BATCH_ID> 
         </tns1:P_BATCH_TBL_ITEM> 
         <tns1:P_BATCH_TBL_ITEM> 
           <tns1:BATCH_ID>85374</tns1:BATCH_ID> 
         </tns1:P_BATCH_TBL_ITEM> 
         <tns1:P_BATCH_TBL_ITEM> 
           <tns1:BATCH_ID>85358</tns1:BATCH_ID> 
         </tns1:P_BATCH_TBL_ITEM> 
        </tns1:P_BATCH_TBL> 
      </tns1:InputParameters> 
     </SOAP-ENV:Body> 
     </SOAP-ENV:Header> 
    </SOAP-ENV:Envelope>') body from dual 
    ) 
    select extract(body,'/SOAP-ENV:Envelope/SOAP-ENV:Header/SOAP-ENV:Body/tns1:InputParameters/tns1:P_BATCH_TBL/tns1:P_BATCH_TBL_ITEM/tns1:BATCH_ID', 
    ' xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/" 
     xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" 
     xmlns:tns1="http://xmlns.oracle.com/apps/gl/soaprovider/plsql/geas_gl_journal_pkg/geas_get_gl_data/"').getStringVal() 
    from fnd_soa_body_piece 

更新：

返回的結果爲一個SQL數據集，你需要使用XMLTABLE函數，如：

with fnd_soa_body_piece as (
select xmltype(
     '<?xml version="1.0" encoding="UTF-8"?> 
     <SOAP-ENV:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
      xmlns:xsd="http://www.w3.org/2001/XMLSchema" 
      xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/" 
      xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"> 
     <SOAP-ENV:Header> 
     <SOAP-ENV:Body> 
      <tns1:InputParameters xmlns:tns1="http://xmlns.oracle.com/apps/gl/soaprovider/plsql/geas_gl_journal_pkg/geas_get_gl_data/"> 
        <tns1:P_BATCH_TBL> 
         <tns1:P_BATCH_TBL_ITEM> 
           <tns1:BATCH_ID>85380</tns1:BATCH_ID> 
         </tns1:P_BATCH_TBL_ITEM> 
         <tns1:P_BATCH_TBL_ITEM> 
           <tns1:BATCH_ID>85345</tns1:BATCH_ID> 
         </tns1:P_BATCH_TBL_ITEM> 
         <tns1:P_BATCH_TBL_ITEM> 
           <tns1:BATCH_ID>85364</tns1:BATCH_ID> 
         </tns1:P_BATCH_TBL_ITEM> 
         <tns1:P_BATCH_TBL_ITEM> 
           <tns1:BATCH_ID>85356</tns1:BATCH_ID> 
         </tns1:P_BATCH_TBL_ITEM> 
         <tns1:P_BATCH_TBL_ITEM> 
           <tns1:BATCH_ID>85374</tns1:BATCH_ID> 
         </tns1:P_BATCH_TBL_ITEM> 
         <tns1:P_BATCH_TBL_ITEM> 
           <tns1:BATCH_ID>85358</tns1:BATCH_ID> 
         </tns1:P_BATCH_TBL_ITEM> 
        </tns1:P_BATCH_TBL> 
      </tns1:InputParameters> 
     </SOAP-ENV:Body> 
     </SOAP-ENV:Header> 
    </SOAP-ENV:Envelope>') body from dual 
    ) 
    select t.batch_id 
    from fnd_soa_body_piece, 
    xmltable(xmlnamespaces(
       'http://schemas.xmlsoap.org/soap/encoding/' as "SOAP-ENC", 
       'http://schemas.xmlsoap.org/soap/envelope/' as "SOAP-ENV", 
       'http://xmlns.oracle.com/apps/gl/soaprovider/plsql/geas_gl_journal_pkg/geas_get_gl_data/' as "tns1"), 
       '/SOAP-ENV:Envelope/SOAP-ENV:Header/SOAP-ENV:Body/tns1:InputParameters/tns1:P_BATCH_TBL/tns1:P_BATCH_TBL_ITEM/tns1:BATCH_ID' 
       passing fnd_soa_body_piece.body columns batch_id number(10) PATH 'text()') t