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DB2 - Problem description

Problem IC63537 Status: Closed

WRONG RESULTS OR ERROR SQL0802 WITH FUNCTION SYSIBM.POWER WHERE SECOND
ARGUMENT IS NULL

product:
DB2 FOR LUW / DB2FORLUW / 950 - DB2
Problem description:
The result of function SYSIBM.POWER is supposed to be NULL is 
any of it's input arguments is NULL. 
 
SYSIBM.POWER will either return wrong results or error SQL0802 
if the second argument is NULL. 
e.g.: 
 
db2 "values(power(10,cast(NULL as integer)))" 
 
1 
----------- 
          1 
 
 
 
 db2 "values(power(10,cast(NULL as decimal(5,1))))" 
 
1 
------------------------ 
  +1.00000000000000E+140 
 
 
 
db2 "values(power(10,cast(NULL as decimal)))" 
 
1 
------------------------ 
SQL0802N  Arithmetic overflow or other arithmetic exception 
occurred. 
SQLSTATE=22003 
 
 
This APAR addresses this issue and ensures correct results when 
using function SYSIBM.POWER.
Problem Summary:
**************************************************************** 
* USERS AFFECTED:                                              * 
* All                                                          * 
**************************************************************** 
* PROBLEM DESCRIPTION:                                         * 
* The result of function SYSIBM.POWER is supposed to be        * 
* NULLisany of it's input arguments is NULL.SYSIBM.POWER will  * 
* either return wrong results or errorSQL0802if the second     * 
* argument is NULL.e.g.:db2 "values(power(10,cast(NULL as      * 
* integer)))"1-----------1db2 "values(power(10,cast(NULL as    * 
* decimal(5,1))))"1------------------------+1.00000000000000E+14 
* "values(power(10,cast(NULL as                                * 
* decimal)))"1------------------------SQL0802N  Arithmetic     * 
* overflow or other arithmetic                                 * 
* exceptionoccurred.SQLSTATE=22003This APAR addresses this     * 
* issue and ensures correct resultswhenusing function          * 
* SYSIBM.POWER.                                                * 
**************************************************************** 
* RECOMMENDATION:                                              * 
* Upgrade to DB2 version 9.5 FP6                               * 
****************************************************************
Local Fix:
Use SYSFUN.POWER as a workaround.
available fix packs:
DB2 Version 9.5 Fix Pack 6a for Linux, UNIX, and Windows
DB2 Version 9.5 Fix Pack 7 for Linux, UNIX, and Windows
DB2 Version 9.5 Fix Pack 8 for Linux, UNIX, and Windows
DB2 Version 9.5 Fix Pack 9 for Linux, UNIX, and Windows
DB2 Version 9.5 Fix Pack 10 for Linux, UNIX, and Windows

Solution
first fixed in DB2 V9.5 FP6
Workaround
Use SYSFUN.POWER as a workaround.
BUG-Tracking
forerunner  : APAR is sysrouted TO one or more of the following: IC63538 IC65479 
follow-up : 
Timestamps
Date  - problem reported    :
Date  - problem closed      :
Date  - last modified       :
02.10.2009
22.06.2010
22.06.2010
Problem solved at the following versions (IBM BugInfos)
9.5.FP6
Problem solved according to the fixlist(s) of the following version(s)