Updating xmltype

Posted by / 04-Sep-2017 16:56

Updating xmltype

select xmltype.extract(x,'/rss/channel/item/description/text()')String Val() title from xmldocs; TITLE ---------------------------------------------------------- Update statement and Null-values -- update a table from another table DIFFERENCES BETWEEN PROCESSES, SESSIONS AND CONNECTIONSBackup and Recovery Logical Reads vs Physical Reads Loading XML Into Tables Using Pl/SQLperformance with index Pivot Query Your favorite 10g features Import takes more time V$session_wait What if I want to insert the data itemwise?select rownum, extractvalue(value(i), 2 '/item/description/text()') descr 3 from xmldocs, 4 table( xmlsequence( extract(xmldocs.x, '/rss/channel/item') ) ) i 5 / ROWNUM DESCR ------ -------------------------------------------------- 1 Hi ,tom Is there any way to estimate the performance increased by adding index ?You can do this through the same procedure you use to retrieve the XML, or better yet you can do it through an insert trigger. NET application that users can use to put XML into the table as well).

But I check the XML API Reference documentation from oracle, it seems that statement should be like: x.extract('/rss/channel/title/text()')String Val(), And I tried it and failed. begin 2 for i in ( select A.x.extract('/rss/channel/title/text()')String Val() title, 3 A.x.extract('/rss/channel/link/text()')String Val() link, 4 A.x.extract('/rss/channel/description/text()')String Val() descr, 5 A.x.extract('/rss/channel/language/text()')String Val() lang, 6 A.x.extract('/rss/channel/copyright/text()')String Val() copyright 7 from xmldocs A) loop 8 insert into xmldoc_values( title, link, descr, lang, copyr ) 9 values (i.title, i.link, i.descr, i.lang, i.copyright); 10 end loop; 11 end; 12 / as well. Inserted rows should looklike : select xmltype.extract(x,'/rss/channel/item/description/text()')String Val() title from xmldocs; TITLE ---------------------------------------------------------- Update statement and Null-values update a table from another table DIFFERENCES BETWEEN PROCESSES, SESSIONS AND CONNECTIONS Backup and Recovery Logical Reads vs Physical Reads Loading XML Into Tables Using Pl/SQL performance with index Pivot Query Your favorite 10g features Import takes more time V$session_wait 10 Rows Selected --------------------- But when I do that I can see only one row.What is a good way to do this given that I want to do this in PL/SQL? ---------------------------------------- I assume the url changes from time to time, so you could simply pass the url into a function that retrieves the XML document and saves it as a new row in a table w/ an XMLType column.I have played with a number of test cases (registering the schema, creating an XSLT, etc. You might store the timestamp of the request, the url of the xml request, and the content at the time of retrieval (with the thought that it might change over time).----------------------------------- [email protected] create or replace trigger xmldocs_bifer 2 before insert 3 on xmldocs 4 for each row 5 declare 6 l_rssver number; 7 l_xml xmltype := :new.x; 8 begin 9 l_rssver := l_xml.extract('/rss/@version')Number Val(); 10 if l_rssver .getxml()) * ERROR at line 2: ORA-20001: Wrong RSS version! XMLDOCS_BIFER", line 7 ORA-04088: error during execution of trigger 'DHS.XMLDOCS_BIFER' ----------------------------------- Now, as for loading the data into a relational table. You can either query the document for xpath expressions and insert the data into the table based on the results, or you can simply use DOM to parse the document and insert the values based on the results you get.

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2) I also have users who may, if the website is down, enter the data via a .