A fix is available
APAR status
Closed as program error.
Error description
Query with XML using BETWEEN predicates has unexpected high number of getpages
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All DB2 10, 11 for z/OS users of XML index. * **************************************************************** * PROBLEM DESCRIPTION: The XML index access may return more * * rows when the query includes predicates * * that are transformed into a "between" * * predicate. * **************************************************************** * RECOMMENDATION: * **************************************************************** The XML index access may return more rows when the query includes predicates that are transformed into a "between" predicate. The following DDL statements will create a table T1 with one XML column X1 and the XML index IDX11 to index on the value of node /a/b of the XML documents in column X1. CREATE TABLE T1 (X1 XML); CREATE INDEX IDX11 ON T1(X1) GENERATE KEYS USING XMLPATTERN '/a/b' AS SQL VARCHAR(10); In the following query, the predicate in the square bracket in the XPath will be transformed into "between" predicate. SELECT XMLSERIALIZE(X1 AS CLOB) FROM T1 WHERE XMLEXISTS('$d/a/b . >= $p1 and . <= $p2 ' PASSING X1 AS "d", CAST(? AS VARCHAR(10)) AS "p1", CAST(? AS VARCHAR(10)) AS "p2"); A DB2 code bug that causes the upper bound of the "between" predicate not being set correctly, more rows then necessary may be returned.
Problem conclusion
DB2 is modified, so the upper bound of the "between" predicate will be set correctly and the correct number of rows will be returned. Additional keywords: SQLXML XMLALL
Temporary fix
Comments
APAR Information
APAR number
PI45691
Reported component name
DB2 OS/390 & Z/
Reported component ID
5740XYR00
Reported release
A10
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2015-07-27
Closed date
2015-09-04
Last modified date
2015-10-02
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UI30892 UI30893
Modules/Macros
DSNNQTOP
Fix information
Fixed component name
DB2 OS/390 & Z/
Fixed component ID
5740XYR00
Applicable component levels
Fix is available
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Document Information
Modified date:
02 October 2015