Comments on: DateTime comparisons in SQL Server 2007 http://cdonner.com/why-not-to-use-between-for-datetime-comparisons-in-sql-server-2007.htm We know accurately only when we know little, with knowledge doubt increases. (Goethe) Mon, 06 Feb 2012 12:46:30 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: Christian Donner http://cdonner.com/why-not-to-use-between-for-datetime-comparisons-in-sql-server-2007.htm/comment-page-1#comment-4306 Christian Donner Thu, 19 Feb 2009 23:03:38 +0000 http://cdonner.com/why-not-to-use-between-for-datetime-comparisons-in-sql-server-2007.htm#comment-4306 Yes, I made a mistake 8 months ago, and nobody else seems to have read the posting since then, because nobody pointed out the mistake. I did not reread it when I posted the link on SO. That's why peer-reviewed sites like SO are great. Again, I appreciate the opportunity to correct myself. Now please get over it. Yes, I made a mistake 8 months ago, and nobody else seems to have read the posting since then, because nobody pointed out the mistake. I did not reread it when I posted the link on SO. That’s why peer-reviewed sites like SO are great. Again, I appreciate the opportunity to correct myself. Now please get over it.

]]> By: Mark Brady http://cdonner.com/why-not-to-use-between-for-datetime-comparisons-in-sql-server-2007.htm/comment-page-1#comment-4300 Mark Brady Mon, 16 Feb 2009 20:10:33 +0000 http://cdonner.com/why-not-to-use-between-for-datetime-comparisons-in-sql-server-2007.htm#comment-4300 It's disingenuous to say you wrote this deliriously. You quoted yourself 6 months later on Stack Overflow. This wasn't something I pointed out the following day and you fixed. You wrote this in August and referenced yourself in February. You've believed this was true for 6 months. It's also disingenuous to say you appreciate me pointing it out. When I added a comment to your answer on SO (that seems to be deleted) you defended yourself and told me that I should "know what I'm talking about before accusing you of being wrong". Even when someone tried to point out the error you were defending it, and you weren't open to correction. All I'm asking is before you post things, in multiple locations, that you understand what it is you're posting. We need less disinformation not more. It’s disingenuous to say you wrote this deliriously. You quoted yourself 6 months later on Stack Overflow. This wasn’t something I pointed out the following day and you fixed. You wrote this in August and referenced yourself in February. You’ve believed this was true for 6 months.

It’s also disingenuous to say you appreciate me pointing it out. When I added a comment to your answer on SO (that seems to be deleted) you defended yourself and told me that I should “know what I’m talking about before accusing you of being wrong”. Even when someone tried to point out the error you were defending it, and you weren’t open to correction.

All I’m asking is before you post things, in multiple locations, that you understand what it is you’re posting. We need less disinformation not more.

]]> By: Christian Donner http://cdonner.com/why-not-to-use-between-for-datetime-comparisons-in-sql-server-2007.htm/comment-page-1#comment-4292 Christian Donner Sat, 14 Feb 2009 01:42:23 +0000 http://cdonner.com/why-not-to-use-between-for-datetime-comparisons-in-sql-server-2007.htm#comment-4292 <p>No, I am not basing editorial decisions on reading speed. I am basing my openess to criticism on the probability that you actually read the post.<br /> That said, and after looking at it myself, I have to admit that I must have been delirious when I wrote it. I appreciate that you pointed this out to me. I do not appreciate the way you did it, though. Either way, I will rewrite it when I am back from vacation, or whenever I get to it.</p> No, I am not basing editorial decisions on reading speed. I am basing my openess to criticism on the probability that you actually read the post.
That said, and after looking at it myself, I have to admit that I must have been delirious when I wrote it. I appreciate that you pointed this out to me. I do not appreciate the way you did it, though.
Either way, I will rewrite it when I am back from vacation, or whenever I get to it.

]]> By: Mark Brady http://cdonner.com/why-not-to-use-between-for-datetime-comparisons-in-sql-server-2007.htm/comment-page-1#comment-4291 Mark Brady Fri, 13 Feb 2009 22:29:53 +0000 http://cdonner.com/why-not-to-use-between-for-datetime-comparisons-in-sql-server-2007.htm#comment-4291 I'm unsure what you mean. I couldn't possible have read ... You're basing your editorial decisions on reading speed? That's a cop-out.  I’m unsure what you mean. I couldn’t possible have read … You’re basing your editorial decisions on reading speed? That’s a cop-out. 

]]> By: Christian Donner http://cdonner.com/why-not-to-use-between-for-datetime-comparisons-in-sql-server-2007.htm/comment-page-1#comment-4289 Christian Donner Fri, 13 Feb 2009 21:26:58 +0000 http://cdonner.com/why-not-to-use-between-for-datetime-comparisons-in-sql-server-2007.htm#comment-4289 <p>Mark,<br />I did not approve your other comment. You cannot possibly have read the post in the time since I commented on Stackoverflow.com.<br /><br />I used the strings for illustration purposes, which I realize may not have been the smartest thing. It does not change the underlying issue.<br /> <br />Please read up on <a href="http://msdn.microsoft.com/en-us/library/aa175784(SQL.80).aspx" rel="nofollow">the topic</a> before you insult people.</p> Mark,
I did not approve your other comment. You cannot possibly have read the post in the time since I commented on Stackoverflow.com.

I used the strings for illustration purposes, which I realize may not have been the smartest thing. It does not change the underlying issue.
 
Please read up on the topic before you insult people.

]]> By: Mark Brady http://cdonner.com/why-not-to-use-between-for-datetime-comparisons-in-sql-server-2007.htm/comment-page-1#comment-4287 Mark Brady Fri, 13 Feb 2009 21:19:41 +0000 http://cdonner.com/why-not-to-use-between-for-datetime-comparisons-in-sql-server-2007.htm#comment-4287 You're not working with dates. '01/01/08' isn't a date. Not to any computer functioning. It's a string.Take your second query and replace it with real dates and it works fine.DECLARE @Jan108 datetimeDECLARE @Feb108 datetimeDECLARE @Dec3107 datetime SET @Jan108 = '1/1/08'SET @Feb108 = '2/1/08'SET @Dec3107 = '12/31/07' select case when @Jan108 between @Jan108 and @Feb108 then 'in' else 'out' end as s1, case when @Jan108 between @Dec3107 and @Jan108 then 'in' else 'out' end as s2   You’re not working with dates. ’01/01/08′ isn’t a date. Not to any computer functioning. It’s a string.Take your second query and replace it with real dates and it works fine.DECLARE @Jan108 datetimeDECLARE @Feb108 datetimeDECLARE @Dec3107 datetime
SET @Jan108 = ’1/1/08′SET @Feb108 = ’2/1/08′SET @Dec3107 = ’12/31/07′
select case when @Jan108 between @Jan108 and @Feb108 then ‘in’ else ‘out’ end as s1,
case when @Jan108 between @Dec3107 and @Jan108 then ‘in’ else ‘out’ end as s2

 

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