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https://issues.apache.org/jira/browse/DERBY-3856?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12876253#action_12876253
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Knut Anders Hatlen commented on DERBY-3856:
-------------------------------------------
Same problem can be seen with the DATE function. Example output from the
embedded driver:
ij> values date('10/07/2008');
1
----------
2008-10-07
1 row selected
ij> values date(cast('10/07/2008' as varchar(32)));
1
----------
10/07/2008
1 row selected
Client driver returns 2008-10-07 for both.
The TIME function does not appear to have this problem. With the embedded
driver:
ij> values time(cast('10.00.00' as varchar(32)));
1
--------
10:00:00
1 row selected
Notice that the time string is normalized (dots turned into colons).
> difference between Embedded vs DerbyNetClient in format of return from
> timestamp(cast(? as varchar(32)))
> --------------------------------------------------------------------------------------------------------
>
> Key: DERBY-3856
> URL: https://issues.apache.org/jira/browse/DERBY-3856
> Project: Derby
> Issue Type: Bug
> Components: SQL
> Affects Versions: 10.3.3.1, 10.4.2.0, 10.5.1.1
> Reporter: Myrna van Lunteren
>
> There is a slight difference in how Embedded vs. DerbyNetClient return a
> specific cast.
> This showed up during conversion of the test lang/datetime.sql which before
> was only run with Embedded...
> The following sql:
> prepare dateTimePS as 'values( date(cast(? as integer)),timestamp(cast(? as
> varchar(32))))';
> execute dateTimePS using 'values(cast(1 as integer),
> ''2003-03-05-17.05.43.111111'')';
> gives:
> 1 |2
> -------------------------------------
> Embedded: 1970-01-01|2003-03-05-17.05.43.111111
> DerbyNetClient: 1970-01-01|2003-03-05 17:05:43.111111
> (in Embedded there's a '-' between date and time part, with DerbyNetClient a
> space; with Embedded the separator between time elements is ., with
> DerbyNetClient :. Embedded reflects the data as passed in, with
> DerbyNetClient it seems to be the default timestamp format).
> I am not sure which is correct at this point, but I confirmed the behavior is
> like this in latest builds of trunk and 10.3 and 10.4 branches.
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