IT09606: SELECT ON XML USING FN:UPPER-CASE & TABLE HAS AN INDEX CAN RETURN INCORRECT RESULTS

DB2 Version 10.1 Fix Pack 6 for Linux, UNIX, and Windows

APAR status

• Closed as program error.

Error description

• SELECT on XML table using fn:upper-case can return incorrect
  results when the table has an XML index.
  
  If you have the following conditions:
  
  - Table with XML Column
  - Index on this XML column and does not contain the upper-case
  function in the path
  - SELECT statement that has where condition on the XML column
  that uses fn:upper-case
  
  For example,
  
  db2 -v "create table myXMLtable(id int, XMLcol XML)"
  db2 -v "insert into myXMLtable values
  (1,'<AddProtQuoteResponse><surname>Griffin</surname><test>test1<
  /test></AddProtQuoteResponse>')"
  db2 -v "select t.id, x.surname,x.surname1 from myXMLtable t,
  xmltable (xmlnamespaces('http://www.example.org/DataTypeTest' as
  \"inter\"), '\$i/*:AddProtQuoteResponse' passing t.XMLcol AS
  \"i\" columns surname varchar(15) path 'surname', surname1
  varchar(15) path 'surname/fn:upper-case(.)') as x where
  x.surname1 = 'GRIFFIN'";
  db2 -v "CREATE INDEX TSTIDX ON myXMLtable (XMLcol ASC) GENERATE
  KEY USING XMLPATTERN '/*:AddProtQuoteResponse/surname' AS SQL
  VARCHAR (255)"
  db2 -v "select t.id, x.surname,x.surname1 from myXMLtable t,
  xmltable (xmlnamespaces('http://www.example.org/DataTypeTest' as
  \"inter\"), '\$i/*:AddProtQuoteResponse' passing t.XMLcol AS
  \"i\" columns surname varchar(15) path 'surname', surname1
  varchar(15) path 'surname/fn:upper-case(.)') as x where
  x.surname1 = 'GRIFFIN'";
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * All users                                                    *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * See Error Description                                        *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * Upgrade to DB2 version 10.1.0.5.                             *
  ****************************************************************
  

Problem conclusion

• The problem is first fixed in DB2 version 10.1.0.5.
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

  IT07403

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  DB2 FOR LUW

• Fixed component ID

  DB2FORLUW

Applicable component levels

• RA10 PSN

     UP