]
Juraj Duráni commented on TEIID-3808:
-------------------------------------
OK. Let's add a KI. If server's timezone is set to GMT+0 then no value is adjusted
and application can adjust it by itself.
Informix translator - date/time/timestamp values are adjusted
differently according to timezone
-----------------------------------------------------------------------------------------------
Key: TEIID-3808
URL:
https://issues.jboss.org/browse/TEIID-3808
Project: Teiid
Issue Type: Quality Risk
Affects Versions: 8.7.1.6_2
Reporter: Juraj Duráni
Assignee: Steven Hawkins
The Informix translator adjusts only time value according to server's timezone.
Timestamp values are adjusted only if 'DatabaseTimeZone' property is set. Date
values are not adjusted at all.
I am not sure what is Teiid's logic in this case. Is the difference between
server's timezone and database's timezone taken into account? Or only the timezone
of the database?
-------------------
Server's timezone - GMT+1
DatabaseTimeZone property - not overridden
Result:
|time|date|timestamp|
|01:00:00|2000-01-01|2000-01-01 00:00:00.0|
Server's timezone - GMT+5
DatabaseTimeZone property - not overridden
Result:
|time|date|timestamp|
|05:00:00|2000-01-01|2000-01-01 00:00:00.0|
Server's timezone - GMT+5
DatabaseTimeZone property - GMT+1
Result:
|time|date|timestamp|
|01:00:00|2000-01-01|2000-01-01 04:00:00.0|
Server's timezone - GMT+5
DatabaseTimeZone property - GMT-1
Result (int this case
|time|date|timestamp|
|23:00:00|2000-01-01|2000-01-01 06:00:00.0|
Informix:
{code:sql}
...
datevalue date,
timevalue datetime hour to fraction(1),
timestampvalue datetime year to fraction(1),
...
{code}
VDB - foreign table:
{code:sql}
...
DateValue date OPTIONS (NATIVE_TYPE 'date', NAMEINSOURCE 'datevalue'),
TimeValue timestamp OPTIONS (NATIVE_TYPE 'datetime hour to fraction(1)',
NAMEINSOURCE 'timevalue'),
TimestampValue timestamp OPTIONS (NATIVE_TYPE 'datetime year to fraction(1)',
NAMEINSOURCE 'timestampvalue'),
...
{code}
VDB - view:
{code:sql}
...
DateValue date,
TimeValue time,
TimestampValue timestamp,
...
AS ... DateValue, convert(TimeValue, time), TimestampValue, ...
{code}