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Informix - Problem description

Problem IT39652 Status: Closed

'COUNT(DISTINCT) OVER' IN A 'CASE' STATEMENT WITH MULTIPLE 'WHEN' CLAUSES
CAUSING 768 IN BUILDOLAPCOL

product:
INFORMIX SERVER / 5725A3900 / E10 - 
Problem description:
case statement when used with 'count(distinct) over'  in a
select statement is throwing

768: Internal error in routine buildolapcol: multiple distinct

For example :

select case count(distinct c2) over (partition by c3)
when 1 then 0 when 0 then 1 else null end as v3
from t1
group by c1,c3,c2;

is throwing "768: Internal error in routine buildolapcol:
multiple distinct"
Problem Summary:
****************************************************************
* USERS AFFECTED:                                              *
* Users of Informix Server prior to 12.10.xC16 and 14.10.xC9.  *
****************************************************************
* PROBLEM DESCRIPTION:                                         *
* See Error Description                                        *
****************************************************************
* RECOMMENDATION:                                              *
* Upgrade to Informix Server 12.10.xC16 (if available) or      *
* 14.10.xC9.                                                   *
****************************************************************
Local Fix:
Solution
Workaround
****************************************************************
* USERS AFFECTED:                                              *
* Users of Informix Server prior to 12.10.xC16 and 14.10.xC9.  *
****************************************************************
* PROBLEM DESCRIPTION:                                         *
* See Error Description                                        *
****************************************************************
* RECOMMENDATION:                                              *
* Upgrade to Informix Server 12.10.xC16 (if available) or      *
* 14.10.xC9.                                                   *
****************************************************************
Comment
Fixed in Informix Server 12.10.xC16 and 14.10.xC9.
Timestamps
Date  - problem reported    :
Date  - problem closed      :
Date  - last modified       :
14.01.2022
29.09.2022
29.09.2022
Problem solved at the following versions (IBM BugInfos)
Problem solved according to the fixlist(s) of the following version(s)