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Problem IT39149
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Status: Closed |
SELECT WITH PDQ AND SUBQUERY CAN PRODUCE WRONG RESULTS
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| product: |
INFORMIX SERVER / 5725A3900 / E10 - |
| Problem description: |
With PDQ this example query is producing a different result then
without using PDQ shows different results
export PDQPRIORITY=10
14.10.FC6 $ six dbaccess sysmaster -
Database selected.
> SELECT /*+ explain */ count(*)
FROM systables t50, syscolumns t71
WHERE t50.tabid = t71.tabid
AND t71.tabid||';'||t71.colno in
(SELECT tabid||';'||min(colno)
FROM syscolumns group by tabid);> > > > >
(count(*))
104
1 row(s) retrieved.
=================================
export PDQPRIORITY=0
14.10.FC6 $ six dbaccess sysmaster -
Database selected.
> SELECT /*+ explain */ count(*)
FROM systables t50, syscolumns t71
WHERE t50.tabid = t71.tabid
AND t71.tabid||';'||t71.colno in
(SELECT tabid||';'||min(colno)
FROM syscolumns group by tabid);> > > > >
(count(*))
265
1 row(s) retrieved. |
| Problem Summary: |
****************************************************************
* USERS AFFECTED: *
* Users of Informix Server prior to 12.10.xC16 and 14.10.xC8. *
****************************************************************
* PROBLEM DESCRIPTION: *
* See Error Description *
****************************************************************
* RECOMMENDATION: *
* Upgrade to Informix Server 12.10.xC16 or 14.10.xC8. *
**************************************************************** |
| Local Fix: |
|
| Solution |
|
| Workaround |
****************************************************************
* USERS AFFECTED: *
* Users of Informix Server prior to 12.10.xC16 and 14.10.xC8. *
****************************************************************
* PROBLEM DESCRIPTION: *
* See Error Description *
****************************************************************
* RECOMMENDATION: *
* Upgrade to Informix Server 12.10.xC16 or 14.10.xC8. *
**************************************************************** |
| Comment |
Fixed in Informix Server 12.10.xC16 and 14.10.xC8. |
| Timestamps |
Date - problem reported :
Date - problem closed :
Date - last modified :
| 19.11.2021
07.04.2022
04.05.2023 |
| Problem solved at the following versions (IBM BugInfos) |
|
| Problem solved according to the fixlist(s) of the following version(s) |
