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Problem IT35058
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Status: Closed |
SUBSTR IN COLUMN ORGANIZED COLUMN COMPARISON RETURN WRONG RESULTS
|
| product: |
DB2 FOR LUW / DB2FORLUW / B50 - DB2 |
| Problem description: |
Comparing a column from a column-organized table with an
expression including the SUBSTR function may return wrong
results, e.g.:
db2 "insert into T(c1) values('201803')"
db2 "select C1 from T where substr(C1,1,6) =
substr('2018-03',1,4)|| substr('2018-03',6,2)"
The problem occurs when the column is defined with string length
unit CODEUNITS32 and the SUBSTR expression has constant
arguments. |
| Problem Summary: |
****************************************************************
* USERS AFFECTED: *
* ALL *
****************************************************************
* PROBLEM DESCRIPTION: *
* See Error Description *
****************************************************************
* RECOMMENDATION: *
* Upgrade to Db2 version 11.5.6.0 *
**************************************************************** |
| Local Fix: |
Replace the constant SUBSTR expression with a constant, e.g.
replace SUBSTR('2018-03',1,4) with '2018' and replace
SUBSTR('2018-03',6,2) with '03'. |
| Solution |
|
| Workaround |
****************************************************************
* USERS AFFECTED: *
* ALL *
****************************************************************
* PROBLEM DESCRIPTION: *
* See Error Description *
****************************************************************
* RECOMMENDATION: *
* Upgrade to Db2 version 11.5.6.0 *
**************************************************************** |
| Comment |
First fixed in Db2 version 11.5.6.0 |
| Timestamps |
Date - problem reported :
Date - problem closed :
Date - last modified :
| 25.11.2020
21.06.2021
21.06.2021 |
| Problem solved at the following versions (IBM BugInfos) |
|
| Problem solved according to the fixlist(s) of the following version(s) |
