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DateTime Comparison in SQL and VB.NET

Posted on 2009-07-13
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Last Modified: 2013-11-27
Hi,

I am trying to compare two dates which I believe are in long datetime format although I receive the following error -

The conversion of a char data type to a datetime data type resulted in an out-of-range datetime value.

Code in VB -

Select * FROM Project WHERE (ProjectDate <= '" & Trim(DateTimePicker1.Value) & "')"
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Question by:glit
7 Comments
 
LVL 75

Assisted Solution

by:Aneesh Retnakaran
Aneesh Retnakaran earned 100 total points
ID: 24841058
Pass the date in odbc format YYYY-MM-DD or YYYYMMDD
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LVL 59

Expert Comment

by:Kevin Cross
ID: 24841092
What datetime format do you get when you do this in your VB application (see code snippet)?
If the format is not what your SQL server is expecting, then you may get the issue you are seeing.  For example if your application is generating dd/MM/yyyy and SQL is expecting MM/dd/yyyy then a date such as this would be invalid: 13/07/2009.
MsgBox(DateTimePicker1.Value)

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Author Comment

by:glit
ID: 24841097
sorry, how do I do that?
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LVL 31

Expert Comment

by:RiteshShah
ID: 24841107
why don't you try something like this?

Select * FROM Project WHERE (ProjectDate <= convert(varchar(20),'" & Trim(DateTimePicker1.Value) & "',120)
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LVL 59

Accepted Solution

by:
Kevin Cross earned 400 total points
ID: 24841128
Exactly, as Aneesh indicated.  I was going to suggest you converting the format accordingly, but Aneesh has already posted a good suggestion regarding that.  To implement, just use the ToString of date and pass in the format string corresponding to the ODBC format shown.
Select * FROM Project WHERE (ProjectDate <= '" & DateTimePicker1.Value.ToString("yyyy-MM-dd HH:mm:ss") & "')"

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Author Comment

by:glit
ID: 24841258
Thanks guys, that worked!
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Author Comment

by:glit
ID: 24841259
Thanks guys, that worked!
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