Re: [teiid-dev] [teiid-users] sql server time column
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There are workarounds that can be done (the previous approach was to change time literals
to {ts'1900-01-01 <time>}), but I would rather not do them because:
1. customers are unlikely to have this scenario where a datetime artificially represents
only time values - we forced the issue with our bqt testing
2. if you just wrap the column in the appropriate expression at the connector level, you
miss out on our rewriter enhancements.
----- Original Message -----
From: "Larry O'Leary" <loleary(a)redhat.com>
To: "Steven Hawkins" <shawkins(a)redhat.com>
Cc: "Warren Gibson" <wgibson(a)redhat.com>, "Paul Nittel"
<pnittel(a)redhat.com>, "teiid-users" <teiid-users(a)lists.jboss.org>,
"teiid-dev" <teiid-dev(a)lists.jboss.org>
Sent: Thursday, July 23, 2009 10:02:58 AM GMT -06:00 US/Canada Central
Subject: Re: [teiid-users] sql server time column
On Thu, 2009-07-23 at 10:09 -0400, Steven Hawkins wrote:
Several changes in Teiid have made our old behavior of allowing users
to mark datatime columns from SQL Server/Sybase as time type in Teiid not work (it used to
only fail in some situations with prepared statements). The issue is that SQL Server
treats the default year for a time value as 1900 instead of 1970.
My preferred approach is to have users represent the source datetime as a timestamp in
Teiid (which is the default upon import), but perform type reconciliation in a virtual
model using the following expression - convert(timestampadd(SQL_TSI_YEAR, 70, <source
datatime>), time).
Can this not be done in the connector?
--
Larry O'Leary <loleary(a)redhat.com>
Red Hat, Inc.
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Steven Hawkins