Comments on: What is the SQL Server 2008 DateTime2 Internal Structure? http://sqlfascination.com/2009/10/11/what-is-the-sql-server-2008-datetime2-internal-structure/ Weirdness and oddities within SQL Wed, 25 Aug 2010 07:16:38 +0000 hourly 1 http://wordpress.com/ By: andrewhogg http://sqlfascination.com/2009/10/11/what-is-the-sql-server-2008-datetime2-internal-structure/#comment-3 andrewhogg Tue, 13 Oct 2009 09:30:32 +0000 http://andrewhogg.wordpress.com/?p=121#comment-3 Your absolutely right, I've ended up copying the wrong thing out of the Query window and duplicated a result that should be different. I've updated the post with the correction. Your absolutely right, I’ve ended up copying the wrong thing out of the Query window and duplicated a result that should be different. I’ve updated the post with the correction.

]]> By: BEL8490 http://sqlfascination.com/2009/10/11/what-is-the-sql-server-2008-datetime2-internal-structure/#comment-2 BEL8490 Tue, 13 Oct 2009 09:14:46 +0000 http://andrewhogg.wordpress.com/?p=121#comment-2 Thanks for this clarifying insight. I would suggest two minor editing corrections: 1. The code at the beginning of the article does not have a declaration for the variable @bin1 and should be corrected as follows: set @bin = CONVERT(varbinary(max), @dt) 2. At about halfway down the following example '0180/06/06 00:00:00' => 0x070000000000FFFF00 '0180/06/07 00:00:00' => 0x070000000000FFFF00 should be corrected as: '0180/06/06 00:00:00' => 0x070000000000FFFF00 '0180/06/07 00:00:00' => 0x070000000000000001 as clearly two different dates can not have the same internal presentation. Thanks for this clarifying insight.

I would suggest two minor editing corrections:

1. The code at the beginning of the article does not have a declaration for the variable @bin1 and should be corrected as follows:
set @bin = CONVERT(varbinary(max), @dt)

2. At about halfway down the following example

’0180/06/06 00:00:00′ => 0x070000000000FFFF00
’0180/06/07 00:00:00′ => 0x070000000000FFFF00

should be corrected as:

’0180/06/06 00:00:00′ => 0x070000000000FFFF00
’0180/06/07 00:00:00′ => 0×070000000000000001

as clearly two different dates can not have the same internal presentation.

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